What makes music different from noise? a. the way the sound waves combine b. the variety of the different pitches c. the loudness of the sound d. the intensity of the sound

its A

Explanation:

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.

see earlier