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Q.

3volt battery with negligible internal resistance is connected in a circuit as shown in the figure. The current  I, in the circuit will be

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a

1A

b

13A

c

1.5A

d

2A

answer is B.

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Detailed Solution

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In the given circuit, resistance of  3Ω is in parallel with series combination of two  3Ω resistance.

Rp=3×63+6=189=2Ω

 Using ohm’s law  V=IR    I=VR=32=1.5A

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