Question

A coil of copper having 1000 turn is place in a magnetic field of B= 4T perpendicular to it axis.The cross sectional area of the coil is 0.05m².If it turn through 180° in 0.01 sec then find the emf induced in the coil​

Answer 1

Answer:0.4 V

Explanation:

Flux passing through the coil, =1000×4×10  

−5

×0.05=2×10  

−3

 weber

Change in flux when the coil turns by 180  

o

.

=2×10  

−3

−(−2×10  

−3

)

Δϕ=4×10  

−3

 

e.m.f.=  

dt

dϕ

​  

=  

0.01

4×10  

−3

 

​  

=0.4V

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