Questions
In the circuit shown in figure, reading of voltmeter is V1 when only S1 is closed, is V2 when only S2 is closed and is V3 when both S1 and S2 are closed. Then
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a
V3 > V2 > V1
b
V2 > V1 > V3
c
V3 > V1 > V2
d
V1 > V2 > V3
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Correct option is B
In series: Potential difference ∝ RWhen only S1 is closed , V1=34 E=0.75Ewhen only S2 is closed, V2=67 E=0.86E and when both S1 and S2 are closed combined resistance of 6R and 3R is 2R.∴ V3=23 E=0.67E ⇒ V2 > V1 > V3Similar Questions
A uniform wire of resistance 36 ohm is bent in the form of a circle as shown in fig The effective resistance across the points A and B is
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