Which statement about magnetic poles is accurate?
a) same magnetic poles attract, while different magnetic poles repel.
b) same magnetic poles attract, while different magnetic poles attract.
c) opposite magnetic poles attract, while like magnetic poles repel.
d) opposite magnetic poles repel, while like magnetic poles attract.

divide the right side by the left side

0.024÷1.2=0.02 for example

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.