Keiko builds a transformer in the lab, but it does not decrease the voltage as much as she needs. what should keiko change to further reduce the voltage?

Answer

D. She should increase the number of coils in the primary winding.

Explanation

A transformer is a device that is used to step down or step up a the voltage.

It has two coils, primary and secondary that are used to determine how much the voltage changes.

To decrease the voltage the ratio of number of coils in the primary to the number of coils in the secondary should be big.

To reduce the voltage, D. She should increase the number of coils in the primary winding.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.