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A square loop of size 2 cm is lying on a...

A square loop of size 2 cm is lying on a horizontal surface. A uniform magnetic field of 0.4 T is directed downward at an angle of `30^@` to the vertical as shown in the Fig. The flux linked is _____ Wb.

A

`8xx10^(-4)`

B

8

C

`8xx10^(-5)`

D

`16xx10^(-5)`

Text Solution

Verified by Experts

The correct Answer is:
C
`phi=vecA.vecB`
`=AB cos theta`
`=4xx10^(-4)xx0.4xxcos60^@ " " [because A=(2xx10^(-2))^2 = 4xx10^(-4) m^2]`
`therefore phi=8xx10^(-5)` Wb
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