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Inductors

Q1: When a coil collapses the induced circuit current will:

A be in the same direction

B go to zero

C aid counter emf buildup

D be in the opposite direction

ANS:A - be in the same direction

When the current in a circuit is switched off, the induced magnetic field begins to collapse. As the field is collapsing, it generates voltage in the direction that momentarily prolongs the main current flow. Which means the induced current aids the flow of current and would be in the same direction.



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