Question

If the current i through a registor is increased by 100%(assume that temperature remian unchared ) the 1 crease

Answer 1

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12th

Physics

Current Electricity

Electric Energy and Power

If the current I through a ...

PHYSICS

If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be

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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%.