1. (Answers on final slide)
Ohm’s Law and Circuits
(Answers on final slide)

2. 1. The rate of charge flow in a circuit is known as …
Resistance
Voltage
Current
Power
Electrical Energy
[Default]
[MC Any]
[MC All]

3. 2. The potential difference between the ends of a wire that is required for current to flow is known as the…
Resistance
Voltage
Current
Power
Electrical Energy
[Default]
[MC Any]
[MC All]

4. 3. The opposition to current flow is called…
Resistance
Voltage
Current
Power
Electrical Energy
[Default]
[MC Any]
[MC All]

5. 4. Which of these statements are true about electric current
4. Which of these statements are true about electric current? Choose all that apply.
The rate of charge flow
Measured in Ohms
Inversely related to resistance
Measured in Amperes
Requires an open circuit to flow
Requires a potential difference to flow
All of these statements are true
None of these statements are true.
[Default]
[MC Any]
[MC All]

6. 5. Which of the following are factors that affect resistance in a wire
5. Which of the following are factors that affect resistance in a wire? Choose all that apply.
material
temperature
length
diameter
current flow
All of the above
None of the above
[Default]
[MC Any]
[MC All]

7. 6. Which statements are true for a series circuit
6. Which statements are true for a series circuit? Choose all that apply.
Voltage is the same across all parts
Current is the same across all parts
Total resistance is the sum of the individual resistors
Individual currents add to equal the total current through the system
Individual voltages add to equal the total voltage put into the system
There is only one path for current to flow
[Default]
[MC Any]
[MC All]

8. 7. Which statements are true for a parallel circuit
7. Which statements are true for a parallel circuit? Choose all that apply.
Voltage is the same across all parts
Current is the same across all parts
Total resistance is the sum of the individual resistors
Individual currents add to equal the total current through the system
Individual voltages add to equal the total voltage put into the system
There are branches of current
[Default]
[MC Any]
[MC All]

9. 8. Electrical energy can be measured in…(Choose all that apply)
Watts
Ohms
Joules
Kilowatt-hours
Watt seconds
Volts
[Default]
[MC Any]
[MC All]

10. 9. The relationship between current, voltage, and resistance in a circuit is known as…
Coulomb’s Law
Kirchoff’s Law
Ampere’s Law
Ohm’s Law
[Default]
[MC Any]
[MC All]

11. 10. If you build circuit A and then add a resistor as in circuit B, the light will
Look brighter
Look less bright
There will no change in brightness
B more resistance means less current to bulb.

12. 11. Which shows the correct way to use an ammeter?B
A B

13. 12. Which resistor will have the greatest current?
50 
10 
They have the same current B

14. 13. Which resistor will have the greatest voltage?
50 
10 
They have the same voltage C

15. 14. Which resistor will have the greatest current?
50 
10 
They have the same current C

16. 15. What is the total resistance in this circuit?
6.4 
21 
38 
75 
C. [1/(45+10) ]^ =38

17. 16. What is the total resistance in this circuit?
6.4 
21 
38 
75 
B [1/(30+40) + 1/45]^-1 =21

18. Answers C 9. D B 10. B A 11. B ACDF 12. B ABCD 13. C BCEF 14. C ADF
CDE
9. D
10. B
11. B
12. B
13. C
14. C
15. C
16. B