When a metal bar is heated the increase in length is greater if 1 the bar is long.
2 the temperature rise is large.
3 the bar has a large diameter.
Which statement(s) is (are) correct?
A 1, 2, 3.
B 1, 2.
C 2, 3.
D 1.
E 3.
Plz help me ASAP!! ( ◜‿◝ )♡

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.

conservation of mass

mass before something happens = mass afterwards