Three point charges Q1 = + 1 mC and Q3 = -1 mC are placed in vertices of an equi

Question

Three point charges Q1 = + 1 mC and Q3 = -1 mC are placed in vertices of an equilateral triangle, which has 2 m long sides. Find electric field (magnitude and direction) and electric potential (magnitude and sign) in the center of the triangle. Find force acting upon the charge Q1. Find total potential energy of the interaction of the charges. A two ?plate capacitor with plate area of 0.1 m^2 and distance between the plates of 1 mm is charged with a potential of 100 V. Find capacitance of the capacitor, its charge and the electric field between the pates Find currents (Value and direction) in all resistors of the circuit given below. Find total electric power developing in this circuit Neglect internal resistances of the batteries.

Explanation / Answer

Only 1 question at a time please
2.
A = 0.1 m^2
d = 1 mm = 0.001 m
C = ebsoleneo*A/d
=(8.854*10^-12)*(0.1)/(0.001)
=8.854*10^-10 F
Cpacitance = 8.854*10^-10 F

UsE:
Q = C*V
=8.854*10^-10*100
= 8.854*10^-8 C
Charge = 8.854*10^-8 C

USE:
E = V/d
= 100/0.001
=100000 V/m
Answer: 100000 V/m

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