a current of 5 ampere is passed for 2 hours in an electric iron having a resistance of 100 ohms calculate the heat produced

Question

a current of 5 ampere is passed for 2 hours in an electric iron having a resistance of 100 ohms calculate the heat produced

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Thiên Di 2 months 2021-07-30T22:05:32+00:00 1 Answers 3 views 0

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    2021-07-30T22:06:37+00:00

    Answer:

     \boxed{\sf Heat \ produced \ (H) = 5 \ kWh}

    Given:

    Resistance (R) = 100 Ω

    Current (I) = 5 A

    Time (t) = 2 hours

    To Find:

    Heat developed (H) in the electric iron

    Explanation:

    Formula:

     \boxed{ \bold{ \sf H = I^2Rt}}

    Substituting values of I, R & t in the equation:

     \sf \implies H =  {5}^{2}  \times 100 \times 2 \\  \\ \sf \implies H = 25 \times 100 \times 2 \\  \\  \sf \implies H = 5000  \\  \\ \sf \implies H = 5 \: kWh

     \therefore

    Heat developed (H) in the electric iron = 15 kWh

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