Question

38. A coil of 100 turns each of area 0.02 m is
rotated so as to cut a magnetic field of induction
3.5 X 10^ Wb/m. Calculate the maximum
e.m.f. induced if the number of revolutions
made by the coil per second is 100.
: 4
Ans.
2​

Answer 1

Answer:

Given: f = 6000 r.p.m = 100 Hz, AND = 100, A = 0.02 =

m2, B = 3.5 1 10-5 T

To find: peak e.m.f (eo)

Formula: eo = 21fBNA

Calculation: From formula,

eo = 2 x 3.14 x 100 x 100 x 0.02 x 3.5 x 10-5

. eo = 43.99 x 10-3 v

The peak value of e.m.f. induced in the coil is

43.99 x 10-3 v.

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