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Q.

What is the reading of voltmeter in the following figure?

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a

3 V

b

2 V

c

5 V

d

4 V

answer is D.

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Detailed Solution

Resistance between A and B =1000 × 5001500=10003 So, equivalent resistance of the circuit,Req=500+1000 3=25003∴  Current drawn from the cell,i=10 2500/3=3250AReading of voltmeter or potential difference acrossAB=3250  ×  10003=4 V
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