A closed loop conductor with radius 2.0 m is located in achanging magnetic field

Question

A closed loop conductor with radius 2.0 m is located in achanging magnetic field. If the maximum emf induced in theloop is 3.0 V, what is the maximum rate at which the magnetic fieldstrength is changing if the magnetic field is orientedperpendicular to the plane in which the loop lies?
A) 0.24 T/s B) 0.080 T/s C) 3.0 T/s D) 1.5 T/s A closed loop conductor with radius 2.0 m is located in achanging magnetic field. If the maximum emf induced in theloop is 3.0 V, what is the maximum rate at which the magnetic fieldstrength is changing if the magnetic field is orientedperpendicular to the plane in which the loop lies?
A) 0.24 T/s B) 0.080 T/s C) 3.0 T/s D) 1.5 T/s

Explanation / Answer

Induced emf = d/dt       = d/dt(BA)      then dB/dt = /A       = /(pi*r^2)       = 3V/(pi *(2m)^2)       =0.24T/s
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