61. mmh The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. The turns ratio of the transformer is 50:1. The primary coil is plugged into a standard 120-V outlet. The current in the secondary coil is 1.7 x 10-3 A. Find the power consumed by the air filter.

 

Power is found from

Since the air filter is hooked up to the secondary coil the power would be

 

 

The relation between turns ratio and voltages is

 

So solving for VS

So power is

 

 

 

 

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This page last updated on June 25, 2018