AIPMT PRELIMS2012Physics-Electricity
AIPMT PRELIMS 2012 Physics Circuits MCQ Question
Type: MCQ-numerical-Medium-Class 12
In the circuit shown the cells A and B have negligible resistances. For Vₐ = 12V, R₁ = 500 Ω and R = 100 Ω the galvanometer (G) shows no deflection. The value of V_b is
A
6 V
B
4 V
C
2 V
D
12 V
Correct Answer
Option C
Detailed Explanation
Since the galvanometer shows no deflection, the potential difference across R must be equal to the potential difference across R₁. Solving the circuit equations gives V_b = 2 V.
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