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Q.

Potential of certain points in circuit are maintained as marked. What is reading of voltmeter (If ammeter reads zero)?

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a

5 V

b

20 V

c

10 V

d

2.5 V

answer is A.

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Detailed Solution

The equivalent circuit is shown in figure.

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In close loop ABCDEFA, –10 –5+5+V=0 or V=10 volt

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