Q.
The power supplied by battery shown in the diagram is (ammeter is ideal)
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a
Zero
b
14.6 W
c
20.25 W
d
32.6 W
answer is B.
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Detailed Solution
Let I is current through battery Let x be current through 3Ω resistance x×315=0.3 ⇒ x=1.5 A∴ I=1.8A P=I2R=14.6 W
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