STANDARDPhysics-Electromagnetic Induction
STANDARD Physics Galvanometer MCQ Question
Type: MCQ-conceptual-Medium-Class 12
If the current sensitivity of a galvanometer is doubled, then its voltage sensitivity will be
A
doubled
B
halved
C
unchanged
D
four times
Correct Answer
Option C
Detailed Explanation
Current sensitivity is the deflection per unit current, given by NAB/k. Voltage sensitivity is the deflection per unit voltage, given by NAB/kR. If the current sensitivity is doubled, the resistance in the circuit will also double, keeping the voltage sensitivity unchanged.
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