Question

if the current i through a resistor is increased by 200% the increase in power dissipated will be (a) 100 % (b) 200 % (c) 300 % (d) 400 %

Answer 1

Explanation:

400% is increased the resistor

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%.

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