College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter20: Electric Current, Resistance, And Ohm's Law
Section: Chapter Questions
Problem 50PE: An electric water heater consumes 5.00 kW for 2.00 h per day. What is the cost of running it for one...
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Question
which of the three household objects cost the most to power per day
![of 31
A student is studying household electricity use and cost. She collects data for three household appliances in her home and records the data in the table
below
Voltage Used
(V)
Number of hours
powered per day
Appliance
Current Used
(Amps)
Refrigerator
4
120
3.0 hrs
Microwave
120
0.10 hrs
Stove
240
0.50 hrs
Which of the three household objects costs the most to power per day?
A. The refrigerator because it uses the most kilowatt-hours
B. The microwave because it uses the most kilowatt-hours
C. More information is needed to determine which costs the most.
O D. The stove because is uses the highest voltage.
to search
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4
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Transcribed Image Text:of 31
A student is studying household electricity use and cost. She collects data for three household appliances in her home and records the data in the table
below
Voltage Used
(V)
Number of hours
powered per day
Appliance
Current Used
(Amps)
Refrigerator
4
120
3.0 hrs
Microwave
120
0.10 hrs
Stove
240
0.50 hrs
Which of the three household objects costs the most to power per day?
A. The refrigerator because it uses the most kilowatt-hours
B. The microwave because it uses the most kilowatt-hours
C. More information is needed to determine which costs the most.
O D. The stove because is uses the highest voltage.
to search
hp
f3
f5
f6
f7
f8
f9
f10
f11
f12
米
&
4
80
Y.
*-
9,
%24
3.
%23
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