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Q.

A,B and C are voltmeters of resistance R, 1.5 R and 3R respectively as shown in the fig. When some potential difference is applied between X and Y,the voltmeter reading are VA,VB and​ VCrespectively.

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a

VA≠VB≠VC

b

VA=VB=VC

c

VA=VB≠VC

d

VA≠VB=VC

answer is C.

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Detailed Solution

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Effective resistance of B and C = 1.5R 3R1.5R+3R=R

In series sequence, V ∝ R

So voltage across 'A ' = voltage across B and C

Now B and C are parallel so VB=VC

⇒VA=VB=VC

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