0.  Look around your house for examples, what are the applications of the following topics of Physics 2:
List all appliances and think about
how each appliance works. Everybody uses physics and engineering
everyday !

1.  What is the SI unit for electric charge?
Show answer
'C' for Coulombs

2.  What is the charge of 1 electron?
Show answer
Use google..
1.602*10^{16}C 
3.  Sketch the electric field lines for (a) neutral particle, (b) positive charge
and (c) negative charge:
Show answer
(a) A neutral charge does not have an electric field
(b) For a positive charge, electric field lines point outward (b) For a negative charge, electric field lines point inward 
4.  Sketch and solve for resultant electric field force acting on a particle, q_{1},
which is near two charged particles, q_{2} and q_{3} as shown below?
Assume the following: (a) Particle q_{1} is positive whilst particles q_{2} and q_{3} are negative; (b) Particle q_{1} is negative whilst particles q_{2} and q_{3} are positive; (c) Particle q_{1} is positive whilst particles q_{2} and q_{3} are positive; Hint : Sketch freebody diagrams of electric field forces on particle q_{1} alone for all three cases separately. YES, free body diagrams apply to electric fields as well  wherever there are forces, freebody diagrams are there. Show answer This is a vector addition problem,
review vector addition from Physics 1 before attempting the problem. Just like contact forces,
electric field force is a vector (it has magnitude and direction).
Method #1:
Method #2:
Freebody diagrams: Note that the free body diagram is just showing particle q_{1} and forces that act on q_{1}. Forces F_{21} and F_{31} in part (b) are equal in magnitude and direction to those in part (a). Forces F_{21} and F_{31} in part (c) are equal in magnitude, but opposite in direction to those in part (a) and (b). Symbolic Solution: It should be noted that the magnitude of the resultant force is the same in all 3 cases. Direction changes for part (c) only. Calculate F_{21} and F_{31} using the following equation: Review the formula for solving electric field force, the denominator is the distance between particles. Do you understand how to solve for distance between q_{1} and q_{2}? The angle between F_{21} and the horizontal is determined by taking inverse tangent. Remember SOH CAH TOA This is called 'Cosine Rule', read more about it here. 
5.  One important application of electric fields is electrostatic spray painting of cars.
Assume that at Joe Bob's Body Shop near your house, paint particles are charged to 2C whilst
the car is positively charged. It so happens that you are
hired as an intern by Mr J. Bob. As part of your job,
you explain and demonstrate how electrostatic spray painting works to potential customers.
Answer the following questions to demonstrate you are the most
qualified intern for the job:

6.  You decide to reject your internship offer from Joe Bob's Auto Body because
eventually you want to be a medical doctor/nurse. Instead, you accept
an internship offer to work at a local children's hospital. During your
new intern orientation you are told to always wear your
work shoes while you are in the operating room. The reason for wearing
those 'special shoes' is
to conduct any electrostatic charge you may acquire to the hospital floor. Electrostatic charges can
cause fires (especially if you work with flammable anaesthetic drugs)
or malfunction of equipment in operating rooms. Answer the following
questions to demonstrate you are a prepared intern:
I highly recommend you read Preventing preventing
preventing fires and explosions in the operating room by Noyce L. Griffin

7.  What is the SI unit for capacitance?
Show answer
'F' for Farads

8.  As a curious physics student, you decide to have handson experience
with capacitors. You head over to a local RadioShark store to buy
a 1000 microFarad capacitor so that you can take it apart.
Answer the following questions before you can take it apart:
Image of a capacitor from RadioShark Show answer 
9.  What are the SI units of the following electrical quantities?
Review textbook chapters
