1.

The radius of a circular coil having 50 turns is 2cm. Its plane is normal to the magnetic field. The magnetic field changes from 2T to 4T in 3.14 sec . The induced emf in coil will be

Answer»

Dear Student,

◆ Answer -

EMF = 0.04 V

EXPLAINATION -

# Given -

N = 50 turns

r = 2 cm = 0.02 m

B1 = 2 T

B2 = 4 T

dt = 3.14 s

# Solution -

EMF induced in the COIL will be calculated as -

EMF = N.dΦ/dt

EMF = N.dB.A/dt

EMF = 50 × (4-2) × (π×0.02^2) / 3.14

EMF = 50 × 2 × 4×10^-4

EMF = 0.04 V

Hence, EMF induced in the coil is 0.04 V.

Thanks dear...



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