Two identical spheres, X and Y, on insulated stands, carry charges of 3 µCand-5 µC respectively. The spheres are brought into contact with each otherand returned to their original positions. The charge on EACH sphere aftercontact is .....

PHYSICAL SCIENCES

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Two identical spheres, X and Y, on insulated stands, carry charges of 3 µCand-5 µC respectively. The spheres are brought into contact with each otherand returned to their original positions. The charge on EACH sphere aftercontact is ____

A	8 µC
B	-4µC
C	-2µC
D	-1µC

Explanation:

Detailed explanation-1: -Two identical metal spheres carry charges of + q and-2q respectively. When the spheres are separated bya large distance r, the force between them is F. Now the spheres are allowed to touch and then moved backto the same separation.

Detailed explanation-2: -As the charge is conserved, therefore, the net charge on both sphere after they touch each other will be same as before.

Detailed explanation-3: -Two identical small metal spheres initially carry charges q1 and q2. When they’re 1.0 m apart, they experience a 2.5 N attractive force. Then they’re brought together so charge moves from one to the other until they have the same net charge. They’re again placed 1.0 m apart, and now they repel with a 2.5 N force.

Detailed explanation-4: -When the spheres are separated and the balloon is removed, the two spheres display a charge. The left sphere ends up with a positive charge (the opposite type of charge as the balloon). The right sphere ends up with a negative charge.

There is 1 question to complete.