Solutions to Self-Test Problems: Chapter
18
Multiple Choice Questions
1
If the length and diameter of a piece of conducting wire are doubled, by how much does the
resistance change?
a)
b)
c)
d)
e)
remains the same
2 times as much
4 times as much
as much

Multiple Choice Questions
1
Which are the correct units for the electric field?
a) N/C and V
b) N/C and V/m
c) V and kg.m/s
2
In the diagram to the right, where is the potential zero?
a) At B,C and D
b) At B only
c) At A, B and C
d)

Phys1008B W2014
Solutions to Self-Test Chapter 16
Multiple Choice
A1
Is it possible for two negative charges to attract each other?
A) Yes, they always attract.
B) Yes, they will attract if they are close enough.
C) Yes, they will attract if one carries a

Physics 1008: Long Answer Revision
Questions & Solutions Part 1
B1
Consider the arrangement shown in the diagram. The distance from point A to point C is
9.06 cm, and the distance from point B to point C is 3.01 cm. A proton is fixed in place at point C.