Question

A coil of area 100 cmº has 1000 turns. Magnetic field of
0.1 Wb/m2 is perpendicular to the coil. The field is
reduced to zero in 0.1 second. The induced emf in the coil
is?
A) 10 V
C) 50 V
B) 5V
D) Zero​

Answer 1

Answer:

A= 100 cm2

= 100/10000 = 1/100 m2

N=1000,

dB=0.1 Wbm−2

dt=0.1 s

As E= dϕ/dt

=N*A*dB/dt

= 1000*1/100 * 0.1/0.1

= 10 V

Answer 2

Answer:

kguf8h0fu0illht7tdiho