Final Exam Part 1 (Ch18-21)

Four identical metal spheres have charges of qA = −8.0 µC, qB = −2.0 µC, qC = +5.0 µC, and qD = +12.0 µC. (b) In a similar manner, which three spheres are brought together and then separated, if the final charge on each of the three is +3.0 µC?

A and C and D

Four identical metal spheres have charges of qA = −8.0 µC, qB = −2.0 µC, qC = +5.0 µC, and qD = +12.0 µC. (a) Two of the spheres are brought together so they touch, and then they are separated. Which spheres are they, if the final charge on each one is +5.0 µC?

B and D

A charged conductor is brought near an uncharged insulator. Which one of the following statements is true? A) Both objects will repel each other. B) Both objects will attract each other. C) Neither object exerts an electrical force on the other. D) The objects will repel each other only if the conductor has a negative charge. E) The objects will attract each other only if the conductor has a positive charge.

B