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प्रश्न
State the S.I. unit of electric potential.
उत्तर
S.I. unit of potential is volt (v).
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संबंधित प्रश्न
What is meant by saying that the potential difference between two points is 1 V?
State whether the resistivity of a wire changes with the change in the thickness of the wire.
Which device is used to measure p.d?
What is a voltmeter?
Name a device which helps to maintain potential difference across a conductor (say, a bulb).
The p.d. across a lamp is 12 V. How many joules of electrical energy are changed into heat and light when:
a charge of 1 C passes through it?
What p.d. is needed to send a current of 6 A through an electrical appliance having a resistance of 40 Ω?
The values of potential difference V applies across a resistor and the corresponding values of current I flowing in the resistor are given below:
| Potential differences, V (in volts) | : | 2.5 | 5.0 | 10.0 | 15.0 | 20.0 | 25.0 |
| Current, I (in amperes) | : | 0.1 | 0.2 | 0.4 | 0.6 | 0.8 | 1.0 |
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.
What does the positive and negative sign of potential convey?
