Electricity Class 10th Ncert Pdf Ios
02.10.2020
NCERT Solutions for Class 10 Science all chapters in PDF for
What is an electric current? Answer: Electric current is the amount of charge flowing through a particular area in unit time. OR, The rate of flow of electric charges [electrons] is called electric current. The force that move the electrons comes from cell. Answer: Ammeter is always connected in series in a circuit so Electricity Class 10th Ncert Pdf Ios that the value of the current in the necrt remains same independent of its position in the electric circuit. Calculate the number of Electricity Class 10th Ncert Pdf Ios electrons constituting one coulomb of charge.
A current of 0. Find the amount of electric charge that flows through the circuit. Electric current was considered to be the flow of positive charges and the direction of flow of positive charges was taken to be the direction of electric current. Answer: This is because electrons were not known at the time when electricity class 10th ncert pdf ios phenomenon of electricity was first observed.
Conventionally, cllass an electric circuit the direction of electric current is taken as opposite to the Electricity Class 10th Ncert Pdf Ios direction of the flow of electrons, which are negative charges. What is the source of electric charge? Answer: the cells or a battery Q. The torch gives light only when its switch is on. What does a switch do?
Answer: A switch makes a Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios conducting link between the cell and the bulb. If the circuit is broken anywhere or the switch is turned off and the current Electricity Class 10th Ncert Pdf Ios stops flowing are called an open circuit. What do you mean by Electric potential and potential difference? Answer: The work done to Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios move a unit charge from infinity to a given point is called Electric potential or potential at a point. Hence, potential can be measured in term of the work done in moving charge against the force of repulsion.
It is a scalar quantity. Electric potential difference between two points in an electric circuit is the work done to move a unit charge from one point to the. If W work done in bringing unit charge q from one point to the. The potential difference is measured by c,ass of an instrument called the voltmeter. Define 1Volt? OR, What is meant by saying that the potential difference between two points is Electricity Class 10th Ncert Pdf Ios 1 V? Answer: When 1 joule of work is done to move a charge of 1 coulomb from one point to the other Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios it is said to be 1V potential difference.
Why is the voltmeter always connected in parallel across the points between which the Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios potential difference is to be measured? Answer: A voltmeter has a high resistance so when it is connected in parallel consume a Electricity Class 10th Ncert Pdf Ios negligible current from the circuit.
10gh a device that helps to maintain a potential difference across a conductor. Answer: Cell or battery Electricity Class 10th Ncert Pdf Ios Ncert 10th Pdf Class Ios Electricity Q.
What is a circuit diagram? Answer: A schematic diagram of ldf circuit in which different components of the circuit are represented by Electricity Class 10th Ncert Pdf Ios the symbols is called a circuit diagram. How much work is done in moving a charge of 2 C across two points having a potential difference 12 V?
What are resistance and resistor? Answer: The property of a conductor to resist the flow of Electricity Class 10th Ncert Pdf Ios charges through it is called resistance. On what factors does the resistance of conductors depend? Electricity class 10th ncert pdf ios the length Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios means double the resistance. Double the area means half the resistance. A thin wire electricity class 10th ncert pdf ios a higher Electricity Class 10th Ncert Pdf Ios resistance than the same thick piece.
The higher the temperature the higher is the resistance. Why are constantan or manganin chosen for the construction of standard resistance? Answer: Reasons are: High value of resistivity, Least affected by atmospheric conditions, Produce least disturbance in the Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios circuit due to less contact potential with connecting copper wires.
What is the reciprocal of resistivity called? Answer: Reciprocal of resistance is conductance So the reciprocal of resistivity is called Conductivity. Why are alloy commonly used in electrical heating devices, like electric iron, toasters etc? OR, Tungsten is used almost exclusively for filaments of electric bulbs, whereas copper and aluminum are generally used for electrical transmission lines.Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios
Give reason. Answer: Alloys do not oxidized burn readily at high temperatures because the resistivity of an alloy is generally higher than Ncert Class Electricity Ios Pdf 10th that of its constituent metals. The potential difference between the terminals of an electric heater is 60 V when it draws a current Ncert Electricity 10th Ios Pdf Class of 4 A from the source. What current will the heater draw if the potential difference is increased to V?
If the Electricity Class 10th Ncert Pdf Ios diameter of the wire is 0. Predict the material of the electricity class Class 10th Ncert Pdf 40 10th ncert pdf ios. Vlass current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Answer: Current will flow Electricity Class 10th Ncert Pdf Ios more easily through a thick wire as there is less resistance because resistance of a conductor is inversely proportional to cross-sectional area of wire.
Let the resistance clasd an electrical component electricity class 10th ncert pdf ios constant while the potential electricity class 10th Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios ncert pdf ios across the two ends of the component decreases to half of its former value. What change will occur in the current through it?
On what two factors the current through a conductor depends upon? Answer: The current through a conductor depends upon its resistance and the potential difference across its ends. What are the two methods of joining the resistors together?
Answer: In a Electricity Ios Class Ncert 10th Pdf series combination of resistors a An electric circuit in which three or more resistors are joined end to end the resistors are said o be connected in series. It is possible electricity class 10th ncert pdf ios replace resistors joined in series by an equivalent single resistor of resistance.
What happens to the value of current when a number of resistors are connected in series in a Class Electricity Ncert 10th Ios Pdf circuit? Answer: In a series combination of resistors the current is the same in every part of the circuit.
What ncerr be their equivalent eleftricity when a number of resistors are connected in series in a circuit? Answer: Equivalent resistance is equal to the Electricity Class 10th Ncert Pdf Ios sum of their individual resistances.
Find the expression for the equivalent resistance In a series combination of resistors. Answer: Let three resistors having Electricity Class 10th Ncert Pdf Ios 10t R1, R2 and R3, respectively, are joined end to end.
Find the expression for the equivalent resistance in a parallel combination Electricity Class 10th Ncert Pdf Ios of resistors. Connect them with a battery of V volt, an ammeter and a plug key. It is observed that the potential difference across each resistor remains same to V. Why do we use parallel ncertt arrangement for domestic wiring? Answer: A parallel circuit divides the current through the electrical appliances.
The total resistance in a parallel circuit is decreased. Prf is helpful particularly when each gadget has different resistance and requires different current to operate properly. What are the disadvantages of connecting electrical devices in series? Thus it is obviously Ncert Book Of 10th Class Maths Edition Pdf impracticable to connect an electric bulb and an electric heater in series; because they need currents electricity class 10th ncert Electricity Class 10th Ncert Pdf Ios pdf ios widely different values to operate properly.
Another major disadvantage of a series circuit is that when one component fails the circuit is broken and none of the components works.
Calculate the current flowing through the resistors. Copper wire has resistance R. If the electricity class 10th ncert pdf ios of the wire is doubled, find the new resistance in terms of original resistance? Hence resistance Electricity Class 10th Ncert Pdf Ios increases two times.
How would the reading of V change if it is connected between B and C? B1, B2 and B3 Electricity Class 10th Ncert Pdf Ios are three identical bulbs electricity class 10th ncert pdf ios as shown in the figure. When all the three bulbs glow, a current Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios of 3A is recorded by the ammeter A. Answer: a The other two bulbs when the bulb B1 gets fused glow properly.Electricity Class Ios Pdf 10th Ncert Electricity Class 10th Ncert Pdf Ios
Explain the term the heating effect of electric current? Answer: An electric appliances becomes warm if used continuously for longer time elecyricity a part of the source energy is used for work it and rest of the source energy may be expended in heat to raise the temperature. The effect of electric current due to which heat is produced in a wire when current is passed through Electricity Class 10th Ncert Pdf Ios it is called heating effect of current or Joule heating.
In Joule found that when current is passed through a conductor the Electricity Class 10th Ncert Pdf Ios heat produced across it is: i Directly proportional to the squire of the current through the conductor i. Find the expression for Electricity Pdf 10th Class Ios Ncert the electrical energy dissipated or consumes when current flows through a conductor.
Answer: Suppose a current I flowing through a resistor of resistance R and the potential difference electricity class 10th ncert pdf ios it be V for time t. Define power and derive expression for it?
Answer: The rate, at which electric energy is dissipated or consumed, is termed as electric power. The power of 1 Electricity Class 10th Ncert Pdf Ios watt is a rate of working of 1 joule per second. Pcf bigger unit of electric power is kilowatt. Power of an agent is also expressed in horse power hp. Find the expression for the energy supplied to the circuit by cclass source in time Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios t to run an appliances. The S.
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From lighting our homes, charging our devices, electricity has become an integral part of our day-to-day live. So it becomes necessary to understand the origin,characteristics and utilisation of electricity.
In the current chapter we will discuss :. Charge Electricity Class 10th Ncert Pdf IosElectricity Class 10th Ncert Pdf Ios trong> q. Charge is a characteristic unit of matter by means of which matter experiences electric forces. It can be either negative Electricity Class 10th Ncert Pdf Ios electron or positive proton. Electric current can also be defined as the amount of charge flowing through a unit cross-section in per Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios second.
Ampere Defined as one coulomb of charge flowing per second. In an electric circuit the electric current flow in an opposite direction to the flow of electron �ve charge. This current is called conventional current. Small quantity of current are expressed in. Ammeter : It is an instrument used to measure the electric current in a circuit.
It is always connected in series in a circuit. It Electricity Class 10th Ncert Pdf Ios has low resistance practically. It is represented as. Electric Circuit : It is a closed path along which the electric current flows. The 10th Ncert Ios Electricity Pdf Class electrons can only flow when there is difference of electric potential.
It is only possible when there is high pressure at one side Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios and low at another side, then it will move from high pressure to low pressure. In case of electric current, the flow Electricity Class 10th Ncert Pdf Ios of charge is made possible due to chemical action with in a cell that generates the potential difference across theterminals of the Electricity Class 10th Ncert Pdf Ios cell. Electric potential Difference : It is defined as the work done in carrying a unit charge from one point to another in an electric circuit.
SI unit of potential difference � Volts. It is named after Alessandro Volta. One Volt When 1 Joule of work Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios is done in carrying one coulomb 1C of charge from one point to another of a current carrying conductor then the potential difference is said to be IV.
Voltmeter It is an instrument, used to measure the potential difference and represented by the symbol Electricity Class 10th Ncert Pdf Ios in an electric circuit. It is always connected in parallel across the points between which the potential difference is to be measured. It has high resistance. Circuit Diagram :A circuit diagram electrical diagram , elementary diagram , electronic schematic is a graphical representation of an electric circuit.
Chapter Description: Imagining modern civilization without electricity is impossible. It is a convenient form of energy for a variety of applications in Electricity Class 10th Ncert Pdf Ios homes, schools, hospitals, industries, and so on. In this chapter, we will learn about what constitutes electricity and how it flows in Electricity Class 10th Ncert Pdf Ios an electric circuit. We shall also learn about the heating effect of electric current and its applications.
The resistance of a conductor will Class Ncert Ios Pdf Electricity 10th Electricity Class 10th Ncert Pdf Ios Ncert Pdf 10th Ios Electricity Class depend on the length, area of cross-section, and the nature of the material the conductor is made of. It is now time Electricity Class 10th Ncert Pdf Ios Electricity Class 10th Ncert Pdf Ios for you to solve all these chapters and practice well to build confidence.
All these resources can be accessed for free and will help you in understanding the concepts better. If you have any questions, feel free to post it in the comment box below.
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