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11 November, 20:28

6. A Soldering Iron has a power of 25W. It uses the 230V mains supply. What is the current when it is switched on?

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  1. 11 November, 20:31
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    Power (P) in "watts" in a circuit is the product in multiplying the current (I) in "amperes" and voltage (V) in "volts".

    P = I x V; I = P / V

    Substituting the given values,

    I = (25 W) / (230 V) = 0.1087 amperes

    Therefore, the current is approximately 0.1087 A.
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