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AG
AG asked in Education & ReferenceHomework Help · 8 years ago

Physics question about current. Conceptual, please help me!?

Please help me with this question:

An inductor with a 2.0 A current stores energy. At what current will the stored energy be twice as large?

2 Answers

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  • derfram
    Lv 7
    8 years ago
    Favorite Answer

    The energy stored in an inductor is

    W = (1/2)LI^2

    So the stored energy is proportional to the square of the current.

    To store twice as much energy would require √2 times the original current. So if you started with 2 amps, you would need to increase the current to 2√2 = 2.828 amps to double the stored energy.

  • Anonymous
    7 years ago

    sophisticated issue. look into in yahoo and bing. just that will help!

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