A conducting ring of radius r is placed in a varying magnetic field perpendicular to the plane of the ring. If the rate at which the magnetic field varies is x, the electric field intensity at any point of the ring is
A
rx
B
C
2rx
D
Text Solution
Verified by ExpertsThe correct answer is:
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Let 
be the electric field intensity at a pint on the circumference of the ring then the emf induced 
where 
is a length element of the ring since 
…… (i)
Also the induced emf is
……. (ii)
Equating (i) and (ii) we get
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