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10 October, 12:14

Identify the force present and explain whether work is done when a positively charged particle moves in a circle at a fixed distance from a negatively charged particle, an iron nail is pulled off a magnet.

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  1. 10 October, 14:34
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    electric force of attraction, The work is zero

    Explanation:

    Between a positive and a negative charge there is an electric force of attraction, as in this case the particle moves in an orbit circulates at a certain velocity at an angle between the displacement and the force is 90, consequently the work defined by

    W = F d cos θ

    The work is zero, therefore the elective force does not create work on the load.
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