2006
Physics
67e856d33cf20db308447ec1
A coil of copper wire of N turns is kept rotating between the poles of a magnet such that the magnetic flux linking the coil changes continuously. Which of the following statements is TRUE?
A.
An e.m.f is induced in the coil such that when the change of flux is positive the e.m.f is positive, and when the change of flux is negative the e.m.f is negative.
B.
An e.m.f is induced in the coil whose magnitude is inversely proportional to both the number of turns in the coil and the rate of change of magnetic flux
C.
. An e.m.f is set up in the permanent magnet which reduces the flux in the coil to zero
D.
A current flows in the coil and e.m.f is set up proportional to both the rate of change of the flux and the number of turns
Correct Answer: A current flows in the coil and e.m.f is set up proportional to both the rate of change of the flux and the number of turns
Explanation
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