A battery with EMF 
and internal resistance 
is connected across a resistance 
. The power consumption in 
will be maximum when:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Power consumed in external resistance R is 
.
To find maximum, differentiate with respect to R :
.
gives 
.
This is the maximum power transfer theorem: maximum power is delivered when the external load resistance equals the source internal resistance.
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