Advertisements
Advertisements
Question
A coil of 25 turns is pulled in 0.05 s between the poles of a magnet, where its area includes `21 xx106-6 "Wb" "to" 1 xx 10^-6 "Wb"`. The average e.m.f. is ______.
Options
`10^-2 "V"`
`10^-3 "V"`
zero
`10^-4 "V"`
MCQ
Fill in the Blanks
Solution
A coil of 25 turns is pulled in 0.05 s between the poles of a magnet, where its area includes `21 xx106-6 "Wb" "to" 1 xx 10^-6 "Wb"`. The average e.m.f. is `10^-2 "V"`.
Explanation:
e = `(-"n"(phi_2 - phi_1))/"t"`
= `(-25(1 xx 10^-6 -21 xx 10-^6))/0.05`
=`10^-2 ` V
shaalaa.com
Faraday's Laws of Electromagnetic Induction
Is there an error in this question or solution?
