Question

A and lamp is connected to power supply. What is the power consumed?

A

W

B

W

C

More than W

D

None of these

Medium

Solution

verified
Verified by Toppr
Correct option is
A

W

The power consumed would be obviously .
It is because the lamp is operated at its rated voltage . So the power consumed will be equal to its power rating, i.e.

Let us solve it to prove it.

We know, power
Putting and

By Ohm's law,
Current in the circuit

Power consumed, P can be calculated as

Hence, option (A) is correct.

Was this answer helpful?

upvote 0
downvote0