Solve the following problems on your own paper. Please:

• Show all work.
• Put a box around your final answer to each problem.
• Be sure proper significant figures (SF) used for all answers.
• Separate all solutions with a horizontal line on your paper.
• A random selection of five problems will be graded for 20 points each.
• Solutions for suggested odd problems can be seen by following links.
• Solutions for assigned problems will be linked from this page after the due date.

Chapter 25

#6

Watch units. Use equation 25-17.

#8

Similar to sample problem 25-2, but solve the series capacitors first before looking at the whole circuit.

#12

The capacitor C(1) should be easy. C(2) involves solving a problem similar to #8.

#16

The slope of the graphs gives you C.

#18

Watch units here. Remember that 1 cm^2 = 0.0001 m^2.

#26

Again, be careful with units on this one.

#28

Problem #9 should help you understand this one, though the values of the capacitance are not the same as in this problem.

#34

The dielectric constant, K, is dimensionless.

#38

Use 25-9 and 25-27 to find C(1) and C(2) first.

#48

The discussion on page 672 should help with the notation.

Suggested problems from chapter 25:

1, 2, 3, 4, 5, 7, 9, 10, 11, 13, 14, 15, 17, 19, 20, 24, 25, 27, 29, 30, 31, 32, 33, 35, 36, 37, 39, 40, 41, 42, 45, 46, 47, 49, 52, 53, 54, 56, 57, 61, 62, 63, 70, 71, 72, 78, 79.

Chapter 26

#14

For simplicity, assume the length is 1.

#18

Use equation 26-16. You can solve this with ratios similar to how you might solve idea gas problems.

#22

Answer with 2 SF.

#24

Conductivity is discussed on page 689.

#36

Use equation 26-26 here.

#56

Use Power = I^2*R for the first part.

#62

Be careful with units here.

Suggested problems for chapter 26:

1, 2, 3, 4, 5, 7, 8, 9, 13, 15, 16, 17, 19, 20, 21, 23, 25, 26, 27, 28, 29, 31, 35, 37, 38, 39, 40, 41, 43, 45, 49, 50, 51, 52, 53, 54, 55, 57, 58, 59, 60, 61, 63.