Ohm's Law

The power rating for the resistor in the given circuit should be at least ______.

A 1/4 W

B 1/2 W

C 1 W

D 2 W

ANS:D - 2 W

v=ir(750*2.5=1875) ->micros amps and mega ohms get cancelled.

Now,
P=vi(1875*750*10^-6).
= 1.40 nearly 2 watts.

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