A magnetic field of `2 xx 10^(-2) Wb//m^2` acts at right angles to a coil of area `100 cm^(2)` with 50 turns. The average e.m.f. Induced in the coil i
A magnetic field of `2 xx 10^(-2) Wb//m^2` acts at right angles to a coil of area `100 cm^(2)` with 50 turns. The average e.m.f. Induced in the coil is 0.1V, what it is removed from the field in t sed. What is the value of t?
A. 1 sec
B. 0.5 sec
C. 0.1 sec
D. 0.01 sec
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Correct Answer - C
`e = (NBA)/t or t = (NBA)/e`
`=(50 xx 2 xx 10^(-2) xx 10^(2) xx 10^(-4))/(1 xx 10^(-1)) = 10^(-1) = 0.1 sec`.
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