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The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. The turns ratio of the transformer is 41:1. The primary coil is plugged into a standard 120-V
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The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. The turns ratio of the transformer is 41:1. The primary coil is plugged into a standard 120-V outlet. The current in the secondary coil is 1.2 x 10-3 A. Find the power consumed by the air filter.

User YotamN
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1 Answer

7 votes

Answer:

5.9 watts

Step-by-step explanation:

The secondary voltage is the primary voltage multiplied by the turns ratio:

(120 V)(41) = 4920 V

The power is the product of voltage and current:

(4920 V)(1.2·10^-3 A) = (4.92)(1.2) W = 5.904 W

The power consumed is about 5.9 watts.

User Vardan Gupta
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