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Magnetism and Electromagnetism - Technical MCQs

Q1:

The polarity of induced voltage while a field is collapsing is

A independent of the force creating the field

B opposite to the force creating the field

C identical to the force creating the field

D present only if the force is stationary

ANS:B - opposite to the force creating the field

As induced voltage is EMF which is produced due to collapsing filed is is have opposite polarity to its source produce.