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20 January, 21:10

How many watts of power are used in a circuit with a 1.5V battery drawiing 410 mA?

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  1. 20 January, 21:28
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    0.615 Watts of power are used by the circuit

    Explanation:

    the formula for Electric power is

    P = V*I

    where P = power used by the circuit [watts], V = tension of the battery [V=volts], I=circuit current [A=amperes].

    therefore

    P = V*I = 1.5 V * 410 mA * (1 A / 1000 mA) = 0.615 W

    P = 0.615 Watts
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