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प्रश्न
Define Electric potential.
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उत्तर
Electric potential is a measure of work done on the unit's positive charge to bring it to that point against all electrical forces. It is represented as ‘V’.
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संबंधित प्रश्न
State whether the resistivity of a wire changes with the change in the thickness of the wire.
A potential difference of 20 volts is applied across the ends of a resistance of 5 ohms. What current will flow in the resistance?
Keeping the potential difference constant, the resistance of a circuit is doubled. The current will become:
Write an expression for the electrical power spent in flow of current through a conductor in terms of resistance and potential difference.
Which one of the following is the correct set-up for studying the dependence of the current on the potential difference across a resistor and why?
Point out two differences between e.m.f. and potential difference as applied to electric circuits.
A 10 m long wire of a particular material is of reistance 5Ω What will be the resistance of 5m long wire of same material and the same thickness.
A current of 1 ampere flows in a series circuit containing an electric lamp and a conductor of 5 Ω when connected to a 10 V battery. Calculate the resistance of the electric lamp.
Now if a resistance of 10 Ω is connected in parallel with this series combination, what change (if any) in current flowing through 5 Ω conductor and potential difference across the lamp will take place? Give reason.
Name the instrument which is used to measure the potential difference.
______ is work done per unit charge.
