A transformer supplies 60 watts of power to a device that is rated at 20 volts (rms). The primary coil is connected to a 120-volt (rms) ac s

Question

A transformer supplies 60 watts of power to a device that is rated at 20 volts (rms). The primary coil is connected to a 120-volt (rms) ac source. What is the current I1 in the primary coil?

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Sigridomena 4 years 2021-08-22T09:31:09+00:00 1 Answers 38 views 0

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  1. niczorrrr
    0
    2021-08-22T09:32:30+00:00
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    Answer:

    I = 0.5A

    Explanation:

    Hello,

    Assuming the transformer is an ideal transformer, we can calculate the value of the current using the formula.

    Data;

    Power = 60 watt

    Primary voltage = 120 volts (rms)

    Power (P) = current (I) × voltage (V)

    P = IV

    This formula is the relationship between power, current and voltage.

    Current = power / voltage

    I = P / V

    I = 60 / 120

    I = 0.5A

    The current in the primary coil is 0.5A

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