A proton is kept at rest. In Experiment 1, another proton is released from rest at a distance d. In Experiment 2, a positron is released from rest at the same distance d. Within the same time interval t, how does the work done on the moving particles compare?

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Physics · Work, Energy and Power

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

It is more for the positron because it has a smaller mass, accelerates faster, and covers a larger distance in time t.

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Answer 1

It is zero in both cases since the source proton remains stationary.

Answer 2

It is more for the positron because it has a smaller mass, accelerates faster, and covers a larger distance in time t.

Answer 3

It is less for the positron because it moves away more rapidly and the force weakens sooner.

Answer 4

It is the same in both cases because the same electrostatic force law is involved.

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