Ac and Dc currents.
Authored by Samantha B
Science
8th Grade
NGSS covered
Used 254+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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 QUESTION
1 min • 1 pt
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 QUESTION
1 min • 1 pt
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.
Tags
NGSS.MS-PS2-3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is a type of electric current that reverses direction periodically over time?
Direct currents
Alternating currents
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of current more efficiently provides energy further distances?
Alternating currents
Direct currents
Pulsating currents
variable currents
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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 QUESTION
1 min • 1 pt
What type of electricity is used in our houses?
Direct Currents
Alternating Currents
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