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प्रश्न
State and define Ohm’s law.
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उत्तर
Ohm’s law states that at a constant temperature, the current flowing in a conductor is directly proportional to the potential difference across its ends, i.e., if the potential difference is halved, the current is also halved and if p.d. is doubled, the current is also doubled, i.e.,
V (potential difference) ∝ i (current)
Or V = iR, where R is constant, called the resistance of the conductor.
So V = iR represents Ohm’s law.
संबंधित प्रश्न
What will be the change in the current if the potential difference is kept constant and the resistance of the circuit is made four times?
- It will remain unchanged.
- It will become four times.
- It will become one-fourth.
- It will become half.
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