what should be the charge on the sphere of radius 4 cm, so that when it is brought in contact with another sphere of radius 2 cm carrying charge 10*10-6 C , there is no transfer of charge

what should be the charge on the sphere of radius 4 cm, so that when i

1.	what should be the charge on the sphere of radius 4 cm, so that when it is brought in contact with another sphere of radius 2 cm carrying charge 10*10-6 C , there is no transfer of charge
Answer» Charge always FLOW from high potential to low potential. If both sphere's potential SHAME there will be no flow of charge Sphere of radius 2cm V = Kq/r = (9 x 10^9 x 10 x 10^-6)/0.02 V = 4.5 x 10^6 v Sphere of radius 4cm Q = Vr/k Q = (4.5 x 10^6 x 0.04)/9 x 10^9 Q = 2 x 10^-5

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what should be the charge on the sphere of radius 4 cm, so that when it is brought in contact with another sphere of radius 2 cm carrying charge 10*10-6 C , there is no transfer of charge

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