A parallel-plate capacitor with area 0.100 m2 and plate separation of 2.00 mm is connected to a 3.00 V battery. (a) What is the capacitance?
F
(b) How much charge is stored on the plates?
C
(c) What is the electric field between the plates?
N/C
(d) Find the magnitude of the charge density on each plate.
C/m2
(e) Without disconnecting the battery, the plates are moved farther apart. Qualitatively, what happens to each of the previous answers?

need to see circuit to get time constant

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.

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.