The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. The turns ratio of the transformer is 42:1. The primary coil is plugged into a standard 120-V outlet. The current in the secondary coil is 2.0 x 10-3 A. Find the power consumed by the air filter.

The power consumed by air filter is 10.08 W

Explanation:

Given:

Primary voltage V

Current in secondary coil A

Turn ratio

For finding power consumed by filter,

We know that the relation between current and number of turns,

    W

Therefore, the power consumed by air filter is 10.08 W

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explanation: