First slide

Lenz's law and conservation of energy

Question

The north and south poles of two identical magnets approach a coil containing a condenser, with equal speeds from opposite sides. Then

Moderate

A

Plate 1 will be negative and plate 2 positive
B

Plate 1 will be positive and plate 2 negative
C

Both the plates will be positive
D

Both the plates will be negative

Solution

By the movement of both the magnets, current will be anticlockwise, as seen from left side, i.e., plate 1 will be positive and 2 will be negative.

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