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

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
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A disc of radius R rotates with constant angular velocity `omega` about its own axis. Surface charge density of ... D. `(mu_(0)alphaomegaR^(3))/(3)`
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