Question

There is a potential difference of 12 V across a resistor with 0.25 A of current in it. The resistance of the resistor is?

Answer 1

Answer:

$48 \Omega$

Explanation:

The resistance of the resistor can be calculated by using Ohm's law:

$V=RI$

where

V is potential difference across the resistor

I is the current through the resistor

R is the resistance

In this problem, we have

$V=12 V$

$I=0.25 A$

So we can re-arrange Ohm's law to calculate the value of the resistance of the resistor:

$R=\frac{V}{I}=\frac{12 V}{0.25 A}=48 \Omega$