If the potential difference between the ends of a fixed resistor … - Vidyadip

MCQ

If the potential difference between the ends of a fixed resistor is halved, the electric power will become:

A
Double.
B
Half.
C
Four times.
✓
One$-$fourth.

✓

Answer

Correct option: D.

One$-$fourth.

Since $\text{P}=\frac{\text{V}^2}{\text{R}}, $ when the potential difference is halved, the power becomes one$-$fourth.

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