Physics - EMI/AC Question with Solution | TestHub
PhysicsEMI/ACAC current and voltageEasy2 minPYQ_2020
PhysicsEasysingle choice
The reason a moving coil galvanometer cannot be used with an alternating current is that
Options:
Answer:
D
Solution:
The typical coil galvanometer is based on the principle that, when a current carrying coil is placed in a magnetic field, the coil experiences a torque.
Since, the current in an AC averages out to zero, the net magnetic field produced will be zero. Hence, the average torque experienced in a given time interval would be zero. Therefore, there will be no deflection.
Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:EMI/ACSubtopic:AC current and voltage
⏱ 2mℹ️ Source: PYQ_2020
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