The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. the turns ratio of the transformer is 46: 1. the primary coil is plugged into a standard 120-v outlet. the current in the secondary coil is 1.8 x 10-3 a. find the power consumed by the air filter.

The power consumed by the air filter is 9.936 watts      

Explanation:

It is given that, the secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter.

Turn ratio of the transformer,

Voltage of primary coil,

Current in the secondary coil,

The power consumed by the air filter is :

...........(1)

For a transformer,

So,

So, the power consumed by the air filter is 9.936 watts. Hence, this is the required solution.                

there are no contact forces mentioned on the list of choices that you've provided.