You walk to the north, then turn 90° to your left and walk another how far are you from where you originally started?

33 m

72 m

85 m

37 m

Whatever distance north and then west you walked, you are then

(1.41 x that distance)

northwest of where you started.

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.