The megnetic flux through a coil is `5 xx 10^(-4)` Wb. At time t=0. it reduces to ten percent of its original value in 0.5 s. The magnitude of e.m.f.

Question

The megnetic flux through a coil is `5 xx 10^(-4)` Wb. At time t=0. it reduces to ten percent of its original value in 0.5 s. The magnitude of e.m.f.

The megnetic flux through a coil is `5 xx 10^(-4)` Wb. At time t=0. it reduces to ten percent of its original value in 0.5 s. The magnitude of e.m.f. induced in the coil is
A. 0.9 mV
B. 0.45 mV
C. 2 mV
D. 5 mV

Monjur Alahi

7 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
`e = (d phi)/(dt)=9/10 xx (5 xx 10^(-4))/(0.5) = 0.9 mV`

7 views Answered 2023-02-05 15:29