Question

The current in a simple electric circuit varies inversely as the resistance. If the current is 20amps when the resistance is 5 ohms, find the current when the resistance is 8 ohms

Answer 1

0.5amps

Explanation:

I is inversely proportional to resistance

I = k/R

k = I/ R

k = 20/5

k = 4

This means that, I = 4/R

So, when R = 8ohms,

I = 4/8

=0.5amps