Question

Calculate the flux passing through an area of 50 cm square when it is placed ina magnetic field of indiction 1.5T such that normal to the plane of the area makes an angle 60 with magnetic field.​

Answer 1

Explanation:

Answer

Correct option is

D

8.65×10

−4

Wb

Area of the coil A=5cm

2

=5×10

−4

m

2

Number of turns N=20

Magnetic field B=10

3

Gauss =10

−1

T

Angle between magnetic field and normal to the plane of coil θ=30

o

Thus flux through the coil ϕ=NBAcosθ

∴ ϕ=20×10

−1

×5×10

−4

×0.865=8.65×10

−4

Wb