Question

What is the p.d. across a 4 resistor when there is a current of 0.3 A in it?

Answer 1

1.2V

Step-by-step explanation:

Given parameters:

Resistance = 4Ω

Current = 0.3A

Unknown:

Potential difference = ?

Solution:

To find the potential difference, we use the ohms law;

V = IR

Now, insert the parameters and solve;

V = 0.3 x 4 = 1.2V