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Electricity Problems:
 
Try these electricity problems as a review for quizzes, tests, and the exam. When you complete a problem, check your work by clicking on the resistor image. Intended for students in Grade 9 Science  .

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Question
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1. Calculate the voltage of a battery that provides 20 joules of energy to every 5 coulombs of charge.
Check Question 1
2. Calculate the energy that a 4 volt battery provides to every 2 coulombs of charge.
Check Question 2
3. How many coulombs of charge are flowing if a 12 volt battery gives 60 joules of energy to every coulomb?
Check Question 3
4. Calculate the current if 24 coulombs of charge pass a point in a circuit every 2 seconds.
Check Question 4
5. Calculate the charge if a current of 15 amperes is flowing for 5 seconds.
Check Question 5
6. Calculate the resistance of a bulb if a current of 0.5 amperes flows through it and the battery is 6 volts.
Check Question 6
7. Calculate the voltage of a battery if the resistance is 10 ohms and the current is 0.24 amperes.
Check Question 7
8. How much energy does a 100 watt lightbulb use in an hour?
Check Question 8
9. Your 3 watt flashlight bulb is getting dim and your batteries have only 2,700 joules of energy left. How long will your flashlight work?
Check Question 9
10. Calculate the total current in a circuit if 3 parallel branches are carrying 2 amperes, 4 amperes, and 6 amperes respectively.
Check Question 10
11. Calculate the current in a circuit with 7 and 8 ohm resistors in series and a 120 volt source.
Check Question 11


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