PHYS-2020: Dr. Luttermoser’s General Physics II
Suggested Homework Problems, Set 2, Spring 2011
The following suggested homework problems will not be graded, but should be done for
review before each Exam. Most of these problems are from your textbook (College Physics,
8th Edition, Serway & Vuille). The solutions are posted in one of four Solution Sets on the
course web page. Try to work these problems out by yourself before looking at the
solutions I have supplied for you.
1. A small sphere that carries a charge q is whirled in a circle at the end of an insulating
string. The angular frequency of rotation is ω. What average current does this rotating
charge represent? (Solution Set 1-9.)
2. Calculate the diameter of a 2.0-cm length of tungsten filament in a small light bulb if
its resistance is 0.050 Ω. (Solution Set 1-10.)
3. Problem 17.27, Page 591. (Solution Set 1-11.)
4. Problem 17.37, Page 591. (Solution Set 1-12.)
5. In the figure below, ∆V = 30 V, R1 = 12 Ω, R2 = 18 Ω, R3 = 9.0 Ω, and R4 = 6.0 Ω.
Find the equivalent resistance of this circuit. (Solution Set 2-1.)
∆V
R2
R1
6. Problem 18.23, Page 621. (Solution Set 2-2.)
R3
R4
7. Problem 18.32, Page 621. (Solution Set 2-3.)
8. Problem 19.2, Page 655. (Solution Set 2-4.)
9. A proton travels with a speed of 3.0 × 106 m/s at an angle of 37◦ with the direction
of the 0.30 T magnetic field in the +y direction. What are (a) the magnitude of the
magnetic force on the proton and (b) the proton’s acceleration? (Solution Set 2-5.)
10. Problem 19.17, Page 656. (Solution Set 2-6.)
11. Problem 19.27, Page 657. (Solution Set 2-7.)
12. Problem 19.36, Page 658. (Solution Set 2-8.)
13. Problem 19.48, Page 659. (Solution Set 2-9.)
14. What current is required in the windings of a long solenoid that has 1000 turns uniformly distributed over a length of 0.400 m in order to produce a magnetic field of
magnitude 1.00 × 10−4 T at the center of the solenoid? (Solution Set 2-10.)