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Q.

A 5V battery with internal resistance 2Ω and a 2V battery with internal resistance 1Ω are connected in parallel with unlike polarities connected together .This combination is connected to10Ω resistor The current in the 10Ω resistor is

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a

0.27 A

b

0.03 A

c

0.05 A

d

0.25 A

answer is D.

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Detailed Solution

With opposite polarities connected in parallel the effective emf is E1r2-E2r1r1+r2
 

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