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13 May, 23:38

Two electrical motors, one with a power output of 250 watts and one with a power output of 500 watts are both connected to a standard home outlet. Which motor draws greater current?

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  1. 14 May, 00:58
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    The 500 watts motor

    Explanation:

    Power is the workdone per unit time, it can be expressed as;

    P = VI

    P = I^2 * R

    Where;

    P = power

    V = potential difference

    I = current

    R = resistance

    Making current the subject of formula;

    I = P/V

    I^2 = P/R

    Since they are both connected to the same standard home outlet. The potential difference across them is thesame (V is constant). Therefore the higher the power the higher the current.

    I ∝ P

    So the electrical motors with higher power 500 watts draws greater current.
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