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AP® Physics 1 & 2

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Moderate

Possible Charge Combination

APPH12-YML9NT

An experiment with electric charge is performed with a glass rod and a silk cloth. Initially, both objects are electrically neutral. The glass rod is rubbed with the silk cloth, and the glass gives electrons to the silk.

Which one of the following options gives two correct possible values for the charges gained by the rod and cloth during this experiment?

A

Glass rod: $+3.2\space\times \space { 10 }^{ -16 }$ coulombs
Silk cloth: $+3.2\space \times \space { 10 }^{ -16 }$ coulombs

B

Glass rod: $+6.4\space \times \space { 10 }^{ -14 }$ coulombs
Silk cloth:$-6.4\space \times \space { 10 }^{ -14 }$ coulombs

C

Glass rod: $+1.0\space \times \space { 10 }^{ -20 }$ coulombs
Silk cloth: $-1.0\space \times \space { 10 }^{ -20 }$ coulombs

D

Glass rod: $+ 0.0034$ nanocoulombs
Silk cloth: $-0.0068$ nanocoulombs