physic help
posted by mash .
The magnetic flux through a coil of wire changes from 8 Txm ^2 to zero in a time 0.5 s. what is the magnitude of the average voltage induced in the coil during this change?
please explain your answer..

Induced voltage is the rate of change of magnetic flux. That is Faraday's law.
Divide the flux change in T*m^2 units by the time in seconds and you will get the average induced voltage during the change
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