A four-turn circular wire coil of radius 0.600 m lies in a plane perpendicular t

Question

A four-turn circular wire coil of radius 0.600 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.395 T. If the wire is reshaped from a four-turn circle to a one-turn circle in 0.129 s (while remaining in the same plane), what is the average induced emf in the wire during this time?

PHY131s17, Homework #6: Changing the number of turns in a coil A four-turn circular wire coil of radius 0.600 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.395 T. If the wire is reshaped from a four-turn circle to a one-turn circle in 0.129 s (while remaining in the same plane), what is the average induced emf in the wire during this time

Explanation / Answer

E = -[{0.395*(15)**(0.600²)}/0.129] V = 51.946 or 51.95 V
[because circumference will be 4 time so radius will also be 4 time so are awill become 16 times so increase will be fifteen times]

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