Q8. Two batteries, each of emf and internal resistance r, are connected in parallel. If we take current from this combination in an external resistance R, then for what value of R maximum power will be obtained? What will be this power?
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Explanation:
The condition for delivering maximum power is that the external resistance is equal to the internal resistance.
Here, R
AB
=R=
r+r
rr
=
2
r
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