The document contains 5 physics problems about electric circuits and electrostatics. Students are instructed to solve each problem by hand, scan their work, and submit it by Friday, September 26th along with commenting on the work of two other students. The 5 problems involve calculating resistance of aluminum wire, equivalent resistance of parallel resistors, current through series resistors connected to a battery, power dissipated by a resistor, and electrostatic force between two point charges.

1. The following questions ask you to solve problems involving
topics we've covered this week. Work each problem on paper,
and post a scanned image of your work for each question, along
with a brief description of how you solved the problem. Your
scanned work should include a step-by-step solution to the
problem. By
Friday, September 26, 2014
, scan and post your work to the
W6 Assignment 2 Lab Dropbox
.
Review the work posted by at least two other students, and post
your comments on the appropriateness of their work by the end
of the week.
Question 1
Aluminum has a resistivity of 2.7*10
-8
Ωm. What would be the resistance of 100 m of aluminum wire
with a cross-sectional area of 2*10
-4
m
2
?
Question 2
A 10 ohm resistor and a 20 ohm resistor are connected in
parallel. What is the equivalent resistance of this setup?
Question 3
A 4 ohm resistor and 10 ohm resistor are connected in series.
If this circuit is connected to a 12 V battery, how much current
will flow through the circuit?
Question 4
A 30 ohm resistor is connected to a 1.5 V battery. How much
power is dissipated by the resistor?
Question 5
Two point charges, each 6*10
-5

2. C, are separated by 30 cm. What is the electrostatic force
produced by this arrangement?