In: Physics
The area enclosed by the wire loop in the figure below is reduced from 31 cm2 to 12 cm2 in a time interval of 0.11 s. The magnitude of the magnetic field is 0.53 T. Find the emf induced in the wire.
Given, Initial area of the wire loop (
) =
Final area of the wire loop (
) =
Time interval for the change in area (
) =
Magnitude of the magnetic field (
) =
Change in the area of the wire loop (
) =
The magnetic flux passing through the loop (
) =
Change in the magnetic flux passing through the wire loop (
) =
We know that emf induced in the wire is the negative of rate of change in the magnetic flux passing through the loop.
So, induced emf in the wire (
) =
,