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answer 5 problems
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1
Problem #1: Electrostatics – Equipotential Surface
An electric dipole consists of 2 charges: (1) q1= 12nC and (2) q2=12nC placed 10 cm apart as
shown below:
[20]
Compute the electric potentials at points (a), (b) and (c) respectively.
The potential at a given point will be the sum of the potential at that point due to each charge
separately
q1= 12nC=12*10^(-9) C
q2=12nC=12*10^(-9) C k=9*10^9 Nm^2/C^2
𝑞
𝑞
𝑞
𝑞
1
2
. 𝑉𝑎 = 𝑘 0.06
− 𝑘 0.04
= −900𝑉
1
2
𝑉𝑏 = 𝑘 0.04
− 𝑘 0.14
= 1930 𝑉
𝑉𝑐 = 𝑘
𝑞1
𝑞2
−𝑘
=0𝑉
0.13
0.13
2
Problem # 2: Electrostatics- Equipotential Surface
Given a capacitor with various equipotential surfaces [1,2,3,4] enclosed within the
boundaries of parallel plates, as shown in figu...