Question

a small conducting sphere is hanged by an insulating thread between the plates of parallel plate capacitor capacitor.. the net force in the sphere is

Answer 1

A small conducting sphere is hanged by an insulating thread between the plates of parallel capacitor.

we know, A parallel plate capacitor means , two parallel plates separated a small distance and charge on each containing equal in magnitude but opposite in directions.

we know, if we assume charge on first plate is q then charge on other plate will be -q.

so, charge induced due to first plate on sphere is $q_i=-q_0$ [ let]

and charge induced due to 2nd plate on sphere is $q'_i=+q_0$

[ because magnitude of charge on plate capacitor is same so, induced charge will be same in magnitude ]

so, net induced charge on sphere = 0

force on sphere = charge induced on sphere × electric field

= 0 × electric field

= 0

hence, net force on sphere is 0

Answer 2

Explanation:

hope it may help you

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