A coil of area `0.4m^(2)` has 100 turns. A magnetic field of 0.04 Wb `m^(-2)` is acting normal to the coil surface. If this magnetic field is reduced

Question

A coil of area `0.4m^(2)` has 100 turns. A magnetic field of 0.04 Wb `m^(-2)` is acting normal to the coil surface. If this magnetic field is reduced

A coil of area `0.4m^(2)` has 100 turns. A magnetic field of 0.04 Wb `m^(-2)` is acting normal to the coil surface. If this magnetic field is reduced to zero in 0.01 s, then the induced emf in the coil is
A. 160V
B. 250 V
C. 270 V
D. 320 V

Monjur Alahi

5 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
Here, `A=0.4m^(2),N=100,dB=0.04Wbn^(-2),dt=0.01s`
AS `epsi=(dphi)/(dt)=NA(dB)/(dt)=100xx0.4xx(0.04)/(0.01)=160V`

5 views Answered 2023-02-05 15:29