Coulomb\'s law is formulated for point-like charged objects. Imagine that you ha

Question

Coulomb's law is formulated for point-like charged objects. Imagine that you have two point-like charged objects q1 and q2 of unspecified sign separated by a distance d and you also have two large spheres of radius R with the same charges q1 and q2. The distance between the centers of the spheres is d.

MULTIPLE CHOICE

Part A

Compare the electric force that the point-like objects exert on each other to the force that the two spheres exert on each other in case of non-conducting spheres.

Part B

Compare the electric force that the point-like objects exert on each other to the force that the two spheres exert on each other in case of conducting spheres with like charges.

Part C

Compare the electric force that the point-like objects exert on each other to the force that the two spheres exert on each other in case of conducting spheres with opposite charges.

(A) The electrical force between the two spheres would be smaller than that due to point-like charged objects. (B) The electrical force between the two spheres would be greater than that due to point-like charged objects. (C) The force on sphere 2 by sphere 1 would be the same as if all the charges were concentrated at the centers of the spheres

Explanation / Answer

C

B

B

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