What is the charge passing through a 15-watt device connected to a 10-volt battery over four hours?

Power, Voltage, and Resistance Concepts

Interactive Video
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Physics
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1.08 x 10^4 coulombs
2.16 x 10^4 coulombs
4.32 x 10^4 coulombs
3.24 x 10^4 coulombs
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the power formula used in the first example?
Power = Voltage - Current
Power = Current x Voltage
Power = Voltage / Current
Power = Current / Voltage
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the current flowing through a device if you know the power and voltage?
Add power and voltage
Divide power by voltage
Multiply power by voltage
Subtract voltage from power
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the second example, what is the energy dissipated by the lamp in two minutes?
324 joules
216 joules
432 joules
108 joules
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for calculating energy dissipated using power and time?
Energy = Power / Time
Energy = Power x Time
Energy = Power + Time
Energy = Power - Time
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a 100-watt bulb is designed for 120 volts, what is the final voltage when it consumes only 90 watts?
114 volts
116 volts
112 volts
110 volts
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What remains constant in the third example when calculating the final voltage of the bulb?
Voltage
Current
Power
Resistance
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