Question

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?

• A. It will remain unchanged
• B. It will becomes four times
• C. It will becomes one-fourth
• D. It will becomes half

Answer 1

Answer: (C)

It will becomes one-fourth

Using Ohm's Law,

$I=\frac{V}{R}$

$I^{\prime }=\frac{V}{4R}$

$I^{\prime }=\frac{I}{4}$

Hence the current will become one-fourth