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- 1. Multiple Choice
What is an Alternating Current?
An electric current that never changes direction.
An electric current that changes direction many times.
An electric current that has no frequency.
A current that has no electrical properties.
- 2. Multiple Choice
What is a Direct Current?
An electrical current flowing in many directions.
A current with a high frequency.
An electric current flowing in one direction only.
A current that is never a straight line.
- 3. Multiple Choice
What is the difference between the movement of the two electrons between the two types of currents?
There's no difference.
An Alternating Currents electrons move in one direction while a Direct Currents electrons move back and forth.
An Alternating Currents electrons move back and forth while a Direct Currents electrons move in one direction.
An Alternating Currents electrons move back and forth while a Direct Currents electrons don't move at all.
- 4. Multiple Choice
What is a type of electric current that reverses direction periodically over time?
Direct currents
Alternating currents
- 5. Multiple Choice
What type of current more efficiently provides energy further distances?
Alternating currents
Direct currents
Pulsating currents
variable currents
- 6. Multiple Choice
What is the difference in frequency between the two currents?
An Alternating Current has a frequency of 0hz, and a Direct Current usually has a frequency of 60hz.
They both have a frequency of 60hz.
An Alternating Current usually has a frequency of 60hz, and a Direct Current normally has a higher frequency.
An Alternating Current usually has a frequency of 60hz, and a Direct Current has a frequency of 0hz.
- 7. Multiple Choice
What type of electricity is used in our houses?
Direct Currents
Alternating Currents
- 8. Multiple Choice
What is HZ when relating to frequency ?
Hz is cycles per second.
Hz is cycles per minute.
Hz is height gained per second.
Hz is height gained per minute.
- 9. Multiple Choice
What type of electric current moves from the positive polarity to a negative polarity and moves forward at all times?
Direct Currents
Alternating Currents
- 10. Multiple Choice
Which of these answer choices below is an example of how a Direct Current obtains its energy?
Lights
Television
Computer
Battery
- 11. Multiple Choice
What in causes a lightbulb to flicker?
Alternating Currents
Direct Currents
- 12. Multiple Choice
What causes the movement of electrons in a Direct Current?
Pulsed electrons on a wire.
The alternating push of electrons along the wire.
The steady pull of electrons along the wire.
- 13. Multiple Choice
How does voltage affect electrical currents?
The voltage of an object has no effect on the current.
If the voltage in the object increases the current will decrease.
If the voltage in the object decreases the current will increase.
If the voltage in the object increases the current will increase.
- 14. Multiple Choice
How does resistance affect a circuit?
The relationship of the resistance and a circuit is indirect.
The relationship of the resistance and a circuit is direct.
- 15. Multiple Choice
Why are conventional currents opposite to the flow of electrons?
The direction that flows negative in circuits flows opposite in circuits because that is how negative charges are moved.
The direction that flows negative in a circuit flows opposite in electrons because that is how positive charges are moved.
Conventional currents flow in the same direction as the flow of electrons.
The direction that flows negative in electrons flows opposite in circuits because that is how negative charges are moved.
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