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प्रश्न
State the S.I. unit of electric potential.
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उत्तर
S.I. unit of potential is volt (v).
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संबंधित प्रश्न
The values of current (I) flowing through a given resistor of resistance (R), for the corresponding values of potential difference (V) across the resistor are as given below:
| V (volts) | 0.5 | 1.0 | 1.5 | 2.0 | 2.5 | 3.0 | 4.0 | 5.0 |
| I (amperes) | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.8 | 1.0 |
Plot a graph between current (I) and potential difference (V) and determine the resistance (R) of the resistor.
What is the SI unit of potential difference?
Define one coulomb charge.
The p.d. across a lamp is 12 V. How many joules of electrical energy are changed into heat and light when: a current of 2 A flows through it for 10 s?
A resistance of 20 ohms has a current of 2 amperes flowing in it. What potential difference is there between its ends?
A 10 m long wire of a particular material is of resistance 5Ω What will be the resistance if the wire is doubled itself.
A 10 m long wire of a particular material is of resistance 5Ω What will be the resistance if the wire is stretched to double its length?
Assertion (A): Charges flow from higher potential to lower potential.
Reason (R): Current flows mainly due to the flow of electrons.
Name the instrument which is used to measure the potential difference.
______ is work done per unit charge.
