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- 1. Multiple Choice
Electric current is defined as
detect electric current
negative terminal to positive terminal
positive terminal to negative terminal
the flow rate of electric charges through a conductor
- 2. Multiple Choice
Electric current flows from
detect electric current
negative terminal to positive terminal
positive terminal to negative terminal
the flow rate of electric charges through a conductor
- 3. Multiple Choice
Electrons flows from
detect electric current
negative terminal to positive terminal
positive terminal to negative terminal
the flow rate of electric charges through a conductor
- 4. Multiple ChoiceWhat is resistance measured in?Ω (Ohms)V (Volts)A (Amps)W (Watts)
- 5. Multiple ChoiceHow do you calculate resistance?Voltage X CurrentCurrent ÷ VoltageVoltage ÷ CurrentCurrent X Amps
- 6. Multiple ChoiceWhat voltage is needed to cause a 2A current flow through a 10Ω resistor?5V0.2V20V200V
- 7. Multiple ChoiceWhat resistance is needed to cause a 50A current flow because of a 500V battery?10Ώ5Ώ2500Ώ550Ώ
- 8. Multiple Choice
Which light globe(s) would never light up?
A
B,C,D
A,B,C,D
None
- 9. Multiple Choice
Voltage is the measure of the...
difference in electrical energy between 2 parts of a circuit
amount of electric charge that flows through a circuit
- 10. Multiple Choice
If you increase the voltage across a resistor, what will happen to the current?
Current will increase
Current will decrease
Current will stay the same
- 11. Multiple ChoiceWhat type of circuit is pictured?seriesparallel
- 12. Multiple ChoiceWhat kind of circuit is this?SeriesConsecutiveParallelTraining
- 13. Multiple Choice
An electric kettle is commonly used to heat up water at home. The heating element used is nichrome wire and not copper. Which of the following reasons best explains why nichrome is used instead of copper?
Nichrome conducts more current than copper, so more heat can be generated.
Nichrome has higher resistance than copper, so more heat can be generated.
Nichrome has higher voltage than copper, so more heat can be generated.
Nichrome are cheaper than copper, so it is more economical.
- 14. Multiple Choice
Which of the following materials is used in a light bulb to produce heat and light?
Nichrome
Copper
Tungsten
Steel
- 15. Multiple Choice
A higher resistance in a circuit causes a _____________.
higher voltage
larger current
smaller current
lower voltage
- 16. Multiple Choice
Which of the following is not a source of electrical energy?
ammeter
dry cell
mains
dynamo
- 17. Multiple Choice
What is resistance?
Flow of electrical charge
Pressure from power to push electrons
Limits the flow of electrons
- 18. Multiple Choice
What is voltage?
Flow of electrical charge
Pressure from power to push electrons
Limits the flow of electrons
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