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Keeping the potential difference constant, the resistance of a circuit is doubled. What happens to the current?
Question

Keeping the potential difference constant, the resistance of a circuit is doubled. What happens to the current?

A.

It becomes one-fourth

B.

It gets doubled

C.

It becomes four times

D.

It gets halved

Correct option is D

The correct answer is (d) It gets halved.
According to Ohm's Law, the relationship between voltage (V), current (I), and resistance (R) is given by the formula: I
· If the potential difference (voltage) remains constant and the resistance is doubled, the current through the circuit will decrease proportionally.
· Specifically, when the resistance is doubled, the current is halved because current is inversely proportional to resistance.
Key Points:
· Ohm's Law: I=VR​, where I is current, V is voltage, and R is resistance.
· Doubling resistance: Results in halving the current when voltage is kept constant.

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