AIPMT MAINS2011Physics-Current Electricity
AIPMT MAINS 2011 Physics Galvanometer MCQ Question
Type: MCQ-numerical-Medium-Class 12
A galvanometer of resistance, G is shunted by a resistance S Ω. To keep the main current in the circuit unchanged, the resistance to be put in series with the galvanometer is
A
G² / (S + G)
B
G / (S + G)
C
S² / (S + G)
D
SG / (S + G)
Correct Answer
Option A
Detailed Explanation
To keep the main current unchanged, the resistance in series with the galvanometer should be G² / (S + G) to balance the shunt resistance.
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