Question

Find the electric power across 10ohm resistor when 20A electric current is passing through it. What will br new power if the resistor is cut into two equal parts.

Answer 1

Explanation:

V=IR

V= 10 × 20

V=200volt

power= 200 × 20

power=4000 watt

if the resistor is cut into two equal parts ,then

R=5

I=x

V=200 volt

v=IR

200=I×5

200÷5=I

40 A= I

New power=200×40A

power=8000 watt