Aconducting loop has an area of 0.065 m2 and is positioned such that a uniform magnetic field is perpendicular to the plane of the loop. when the magnitude of the magnetic field decreases to 0.30 t in 0.087 s, the average induced emf in the loop is 1.2 v. what is the initial value of the magnetic field?

initial magnetic field  1.306 T

Explanation:

We have given area of the conducting loop

Emf induced = 1.2 volt

Initial magnetic field B = 0.3 T

Time dt = 0.087 sec

We know that induced emf is given by

So initial magnetic field = 1.606-0.3= 1.306 T

conservation of mass

mass before something happens = mass afterwards

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