Questions
in the circuit shown, for what value of R, power dissipated in the external circuit is maximum when the value of R is
a
3Ω
b
1.5Ω
c
1Ω
d
4.5Ω
detailed solution
Correct option is A
Power in the external circuit is maximum when equivalent external resistance is equal to the internal resistance of the cell.∴3×R3+R=1.5⇒R=3ΩTalk to our academic expert!
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