How are total lunar eclipses and partial lunar eclipses simular

If the eclipse is a total lunar eclipse, the Moon will pass through the umbra (area of total shadow) created by Earth over the course of about two hours. ... A partial eclipse of the Moon occurs when the Moon passes through only part of Earth's umbra or only its penumbra.

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.

the area between the graph and the t axis