You drop a rock down a well that is 5.4 m deep. how long does it take the rock to hit the bottom of the well?

1 a

2 b

3 b

4 d

5 d

6 d

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.