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A disc of radius R rotates with constant...

A disc of radius R rotates with constant angular velocity `omega` about its own axis. Surface charge density of this disc varies as `sigma = alphar^(2)`, where r is the distance from the centre of disc. Determine the magnetic field intensity at the centre of disc.

A

`mu_0aomegaR^3`

B

`(mu_0aomegaR^3)/6`

C

`(mu_0aomegaR^3)/8`

D

`(mu_0aomegaR^3)/3`

Text Solution

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The correct Answer is:
B
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