Current Electricity - Result Question 100

105. In the circuit shown the cells A and B have negligible resistances. For VA=12V,R1=500Ω and R=100Ω the galvanometer (G) shows no deflection. The value of VB is :

[2012]

(a) 4V

(b) 2V

(c) 12V

(d) 6V

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Answer:

Correct Answer: 105. (b)

Solution:

  1. (b)

Since deflection in galvanometer is zero so current will flow as shown in the above diagram.

current I=VAR1+R=12500+100=12600

So VB=IR=12600×100=2V



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