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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentMedium2 minPYQ_2023
PhysicsMediumsingle choice

The number of turns of the coil of a moving coil galvanometer is increased in order to increase current sensitivity by50%. The percentage change in voltage sensitivity of the galvanometer will be :

Options:

Answer:
D
Solution:

Current sensitivity = Voltage sensitivity ×R

If current sensitivity is made 1.5 times, then R also increase 1.5 times.

Hence, voltage sensitivity =1.5× current sensitivity 1.5×R

= no change.

Stream:JEESubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument
2mℹ️ Source: PYQ_2023

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