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5/30 MCQs for:
Electric fields
A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge?

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 0.20-g metal spheres are hung from a common point by non-conducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is 200. How much charge was placed on each sphere?

Two isolated point charges are separated by 0.04 m and attract each other with a force of 20 µN. If the distance between them is increased by 0.04 m, what is the new force of attraction?

At twice the distance from a point charge, the strength of the electric field: