Electrical Power and Time Calculations
Authored by Charles Martinez
Physics
9th - 11th Grade
NGSS covered
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the unit of measurement for power?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The equation for POWER is:
power = mass x time
power = Energy / time
power = time / water
power = Energy x time
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How much energy does this appliance transfer per second?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A microwave has a power rating of 1550 W. How much energy does it transfer per second?
Tags
NGSS.HS-PS3-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which appliance transfers the most energy per second?
Tags
NGSS.HS-PS3-4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A lamp has a 120 W power rating. It is left on for 30 seconds. How much energy did it use?
3600 J
36 J
450 J
nah
Tags
NGSS.HS-PS3-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A kettle transfers 1000J of energy every 2 seconds. Calculate its power.
2000 Watts
1000 Watts
500 Watts
cannot be determined
Tags
NGSS.HS-PS3-4
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