Answer:
<u>thermal power stations</u>
Explanation:
these resources are burned to produce the electricity.
I think it is A. but then you can also produce your own energy
closed and unsecure circuit
Answer:

Explanation:
= Permittivity of free space = 
A = Area = 
d = Thickness = 
k = Dielectric constant = 5.4
V = Voltage = 86.2 mV
Charge is given by

The charge on the outer surface is 