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Energy and Power - Engineering

Q1:

A 68  resistor is connected across the terminals of a 3 V battery. The power dissipation of the resistor is

A 132 mW

B 13.2 mW

C 22.6 mW

D 226 mW

ANS:A - 132 mW

P=vi.
P=v(v/r),
=9/68,
=0.132W,
=132mW.