Answer :
The magnitude of the average voltage induced in the coil is 12.5 volt.
What is induced emf?
It is the creation of a potential difference in a coil as a result of variations in the magnetic flux flowing through it. To put it another way, it is said that electromotive force, or EMF, is created when the flux connecting with a conductor or coil changes.
Given that: a circular coil with an area of 0.0500 m^2 is wrapped with 500 turns of wire and the magnetic field changes in value from -0.100 T to 0.150 T in an interval of 0.500 s.
Hence, the magnitude of the average voltage induced in the coil is =
N ( B₂ - B₁) A/t
= 500(0.150 - (-0.100))0.0500/0.500 volt.
= 12.5 volt.
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