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5/30 MCQs for:
Electric fields
Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

Which of the following is not a vector?

A positive point charge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

Two charged objects attract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force between them:

Two charged objects are separated by a distance d. The first charge is larger in magnitude than the second charge.