
Power, Work, Efficicency
Authored by Isaak Pearson
Physics
9th - 12th Grade
NGSS covered
Used 16+ times

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22 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the efficiency of a machine if 55.3 J of work are done on the machine, but only 14.3 J is produced by the 1machine?
Tags
NGSS.HS-PS3-1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the work output of a machine that has a work input of 2,800 Joules and an efficiency of 92.3%?
Tags
NGSS.HS-PS3-1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the unit of power?
Watts (W)
Joules (J)
Newtons (N)
Amps (A)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the power of a toaster which can transfer 10,000J of electrical energy in 10 seconds?
100,000W
100,000A
1,000W
1,000A
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The rate at which electrical energy is converted into other forms of energy.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The transfer of energy as electromagnetic waves.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A quantity that measures the ratio of work output to work input.
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