A horizontal circular wire loop of radius 0.5 m
lies in a plane perpendicular to a uniform
magnetic field pointing from above into the
plane of the loop, has a magnitude of 0.42 T.
If in 0.14 s the wire is reshaped from a circle
into a square, but remains in the same plane,
what is the magnitude of the average induced
emf in the wire during this time?
Answer in units of V

Question

A horizontal circular wire loop of radius 0.5 m
lies in a plane perpendicular to a uniform
magnetic field pointing from above into the
plane of the loop, has a magnitude of 0.42 T.
If in 0.14 s the wire is reshaped from a circle
into a square, but remains in the same plane,
what is the magnitude of the average induced
emf in the wire during this time?
Answer in units of V

anonymous · Answer

Do you know Faraday's law of induction?

anonymous · Answer

Sadly I do not :/

anonymous · Answer

Then you need to learn that first :P