Electricity and Energy
Authored by Charles Martinez
Physics
4th - 8th Grade
NGSS covered
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What power is needed to generate 2A of current when plugged into a standard US power outlet (120-V)
240 W
60 W
240 V
60 A
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A 750 Watt hairdryer is used for 15 minutes. Calculate the kWh used. Calculate the energy used.
11,250 kWh
50 kWh
.19 kWh
5 kWh
Tags
NGSS.HS-PS3-1
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If part of an electric circuit dissipates energy at 6 W when it draws a current of 3 A, what voltage is impressed across it?
18 V
2 kW
18 Ω
2 V
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A room is lit by a 150 watt light bulb. How much does it cost to use for 2.5 hr @ 8 cents/kWh?
$30
$4.80
$0.03
$3
Tags
NGSS.HS-PS3-1
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
How much current does a 100‐W lamp draw when connected to 120 V?
12000 A
.12 A
.83 A
12 A
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
There are 2 A of current in a circuit that has one 1.5 V battery. What is the electric power consumed by the circuit?
120 W
0.75 W
1.3 W
3 W
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The electric power consumed by a circuit with one light bulb is 6 W. The current in the circuit is 4 A. What is the voltage of the circuit?
24 V
0.66 V
1.5 V
150 V
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