1.

There are two identical spheres A and B. Now charge Q is established on each sphere. There is a third identical neutral sphere C. Now sphere C is first brought in contact with A and separated then brought in contact with B and separated. After this what will be charge on C ?

Answer»

Q
`Q/2`
`(3Q)/4`
`Q/4`

Solution :ELECTRIC CHARGE on A is Q, electric charge on B is
`Q/2`
Electric charge when they are brought in CONTACT:
`=(Q + Q/2)/(2)`
`=(3Q)/4`


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