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5/30 MCQs for:
Electric fields

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:

Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC 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 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?

Two point charges, separated by 1.5 cm, have charge values of 2.0 and -4.0 µC, respectively. What is the magnitude of the electric force between them?