Question
Physics Question on Electromagnetic induction
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________.
Fill in the blank with the correct answer from the options given below.
A
rx
B
rx/2
C
2rx
D
4r/x
Answer
rx
Explanation
Solution
According to Faraday’s law, the induced electric field is proportional to the rate of change of magnetic flux, giving E = rx for this situation.