Electromagnetic Induction and Alternating Current 7 Question 19

19. The magnitude of the induced electric field in the orbit at any instant of time during the time interval of the magnetic field change is

(a) BR4

(b) BR2

(c) BR

(d) 2BR

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Answer:

Correct Answer: 19. (b)

Solution:

  1. The induced electric field is given by,

Edl=dφdt or El=sdBdtE(2πR)=(πR2)(B) or E=BR2



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