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AP® Physics C: E & M

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Two Charges Force Graph 1

APPHEM-KLSKVO

Consider two charges located on a line in a region far from other charges. Charge 1 is located at position x = 0 m on the line, and Charge 2 is located at position x = 12 m on the line.

A proton placed at any point on the line between the two charges will experience a net force due to the two charges. The net force acting on the proton is shown as a function of position in the graph, where positive values of force represent rightward force.

What is the sign of each charge, and which charge is stronger?

A

Charge 1 is positive, Charge 2 is negative, and the stronger charge is Charge 1.

B

Charge 1 is positive, Charge 2 is negative, and the stronger charge is Charge 2.

C

Charge 1 is positive, Charge 2 is positive, and the stronger charge is Charge 2.

D

Charge 1 is negative, Charge 2 is negative, and the stronger charge is Charge 1.

E

Charge 1 is positive, Charge 2 is positive, and the stronger charge is Charge 1.