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A parallel plate capacitor with circular...

A parallel plate capacitor with circular plates of radius 1m has a c apacitance of 1n F. At `t=0,`it is connected for charging in series with a resistance `R=1MOmega` across2V battery . Calculate the magnetic field at a point P, in between the plates and half way between the centre and the periphery of the plates after `10^(-3)s.`

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