Question

current flowing through a resistor results in dissipation of power P. by what % will the power increase if current is increased by 50%. Show with calculations

Answer 1

if current increases by 100% then power increases by 300%
so, if current increases by 50%then power will increase by 150%

Answer 2

Answer:

Let the original value of current is I ampere.

The new value of current I′=I+100%I=2I.

Now, the new power P′=I′2

R=4I

R=4P.

So, the change in power = P′−P=3P

Therefore, the change in power in terms of percentage is 300%.

Hence, the increase in power dissipated will be 300%.