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? a. she should make the number of coils in the primary winding less than in the secondary winding. b. she should make the number of coils in the primary winding the same as in the secondary winding. c. she should increase the number of coils in the secondary winding. d. she should increase the number of coils in the primary winding.

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.

see earlier answer

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.