You managed to create charged tapes with unequal charges. Tape A carries a posit

Question

You managed to create charged tapes with unequal charges. Tape A carries a positive charge QA = +Q and tape B carries a negative charge that is five times as large, QB = -5Q. You measure the Coulomb forces of the tapes on each other and find:

1. The Coulomb force on B due to A is five times as large as the Coulomb force on A due to B.

2. The Coulomb force on A due to B is larger, but not five times as large, as the Coulomb force on B due to A.

3. The Coulomb force on A due to B is the same as the Coulomb force on B due to A.

4. The Coulomb force on A due to B is five times as large as the Coulomb force on B due to A.

Explanation / Answer

Because F = KQ1Q2/r2

The force on one is also exerted on the other. Therefore, the answer is 3.

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