A charge q is uniformly distributed along the periphery of a non conducting uniform circular disc pivoted at its centre in a vertical plane and can freely rotate about a horizontal axis passing through its centre. A cylindrical region with its axis passing through the centre of the disc has a varying magnetic field B = kt as shown in the adjacent figure. wrapped over the disc as shown and remains stationary, then

A charge q is uniformly distributed along the periphery of a non condu

1.	A charge q is uniformly distributed along the periphery of a non conducting uniform circular disc pivoted at its centre in a vertical plane and can freely rotate about a horizontal axis passing through its centre. A cylindrical region with its axis passing through the centre of the disc has a varying magnetic field B = kt as shown in the adjacent figure. wrapped over the disc as shown and remains stationary, then
Answer» `m=(kqR)/(2g)` `m=(2kqR)/(2g)` Induced ELECTRIC FIELD at the CENTRE of the disc,E=kR/2 Induced electric field at all POINTS on the PERIPHERY of the disc , E=2kR Answer :A

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