Physics 222 Worksheet: Chapter 18, Circuits (Part 1)

1) Coulombs per second is the unit of:

a) potential difference

b) current

c) resistance

d) power

2) Joules per second is the unit of:

a) potential difference

b) current

c) resistance

d) power

3) Joules per coulomb is the unit of:

a) potential difference

b) current

c) resistance

d) power

4) Volts per amp is the unit of:

a) potential difference

b) current

c) resistance

d) power

5) The same current flows in a 100 W and a 200 W resistor.

a) The same heat is produced in both resistors.

b) Twice as much heat is produced in the 100 W resistor.

c) Four times as much heat is produced in the 100 W resistor.

d) Twice as much heat is produced in the 200 W resistor.

e) Four times as much heat is produced in the 200 W resistor.

6) 10 v is applied to 20 W for 30 s. The total charge that flows is:

a) 0.5 C

b) 2.0 C

c) 2.5 C

d) 5.0 C

e) 15 C

f) 60 C

g) 150 C

7) 10 v is applied to 20 W for 30 s. The total heat produced is:.

a) 0.5 J

b) 2.0 J

c) 2.5 J

d) 5.0 J

e) 15 J

f) 60 J

g) 150 J

Ans: 1-b, 2-d, 3-a, 4-c, 5-d, 6-e, 7-g