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

`48 \Omega`

Step-by-step 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=(V)/(I)=(12 V)/(0.25 A)=48 \Omega`