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Physics
10th -
11thgrade
IGCSE Physics Electrical Quantities
35 questions
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- 1. Multiple Choice
A current of 12 A flows for 20 minutes into an electric cooker.
How much charge has the cooker used?
14400 C
280 C
100 C
0.6 C
- 2. Multiple ChoiceThe movement of electrons is calledVoltageCurrentResistancePower
- 3. Multiple ChoiceAn electrical force which occurs as electrons are built up in an objectComplete circuitStatic electricityPower sourceLoad
- 4. Multiple ChoiceThe number of coulombs passing a given point in 1 secondAmpereWattVoltOhm
- 5. Multiple Choice
Alternating Current
Increase in voltage, current and/or power.
The flow of electric charge that periodically reverses polarity.
is the unidirectional flow of an electric charge.
Term used to designate electrical pressure or force that causes current to flow.
- 6. Multiple Choice
An intentional or accidental conducting path between an electrical system or circuit and the earth or some conducting body acting in place of the earth.
ground
impedance
rectification
scientific notation
- 7. Multiple Choice
Direct Current
The flow of electric charge that periodically reverses polarity.
The unidirectional flow of an electric charge.
The basic unit of capacitance.
Increase in voltage, current and/or power.
- 8. Multiple Choice
Equivalent Resistance
The unidirectional flow of an electric charge.
Measured in ohms it is the total opposition to the flow of current offered by a circuit.
Total resistance of all the individual resistances in a circuit.
Voltage or difference in potential developed across a component due to current flow.
- 9. Multiple Choice
Potential Difference
Voltage or difference in potential developed across a component due to current flow.
Unit of potential difference or electromotive force. One volt is the potential difference needed to produce one ampere of current through a resistance of one ohm.
Voltage difference between two points which will cause current to flow in a closed circuit.
Process that converts alternating current to direct current.
- 10. Multiple Choice
Which physical quantity is the same for both R1 and R2 if they have different resistance?
Current
Potential difference
Power
Resistance
- 11. Multiple Choice
Graph represents two conductors with different value of resistance. Resistance of A is _________________ than B.
Higher
Lower
- 12. Multiple ChoiceWhat does the arrows in the circuit represents?conventional currentelectron floweletromotive forcevoltage
- 13. Multiple Choice
What is the name of the Law that relates current, voltage and resistance in an electrical circuit?
Ohm's Law
Lenz's Law
Faraday's Law
Maxwell's Law
- 14. Multiple Choice
What is the term used to represent the "opposition a material presents to flow of electrons"?
Voltage
Power
Current
Resistance
- 15. Multiple ChoiceWhat is the resistance in this circuit?0.05Ω1.8Ω20Ω
- 16. Multiple Choice
This symbol represents a ..............
valve
voltmeter
Voltage
Vacuum
- 17. Multiple Choice
This symbol represents a .............
Anode
Alternator
Amplifier
Ammeter
- 18. Multiple Choice
This symbol represents a ..........
Bulb
Resistor
Wire
L.E.D.
- 19. Multiple Choice
This symbol represents a .........
Resistor
Battery
Twix
buzzer
- 20. Multiple Choice
This symbol represents a ..........
Bulb
Battery
Buzzer
Microphone
- 21. Multiple Choice
This symbol represents a ...........
A snapped wire
Electrical junction
Switch
L.E.D.
- 22. Multiple Choice
Study the circuit diagram below.
Which one of the following will make each bulb in the circuit less bright?
Removing one bulb from the circuit
Removing the switch from the circuit
Adding one bulb in series to the circuit
Adding one battery in series to the circuit
- 23. Multiple Choice
Joseph set up the circuit diagram as shown below.
He realised one of the bulbs had blown and all the other bulbs did not light up. Which bulb had blown?
A
B
C
D
- 24. Multiple Choice
Minghui set up a circuit as shown.
All five bulbs were lit when all four switches were closed.
He wanted four bulbs to be lit by opening only one switch.
Which switch should he open?
A
B
C
D
- 25. Multiple ChoiceIf the Voltage is increased and the resistance stays the same, Current willIncreaseDecreaseStay the sameX
- 26. Multiple Choice
If the battery produced 12.6 Volts what would be the current flow for a 6 Ohm resistor?
2.1 Amps
2.4 Amps
1.71 Amps
15 Amps
- 27. Multiple Choice
What is voltage?
the amount of push the electrical source supplies to the circuit
how much a given device resists the flow of electric current
flow of electric charge
none of the above
- 28. Multiple Choice
What is the resistance of an object that draws 0.24 A when connected to a 120 volt circuit?
0.024 ohms
28.8 ohms
124 ohms
500 ohms
- 29. Multiple Choice
What is the current drawn by a 10 ohm resistor when it is connected to a 12 V car battery?
22 amperes
1.2 amperes
0.83 amperes
120 amperes
- 30. Multiple Choice
Which bulb will be the brightest?
Bulb A
Bulb B
Bulb C
They will all be the same
- 31. Multiple Choice
Starting with all bulbs on, what would happen if bulb B burned out?
Bulb A would turns off and bulb C would stay on
Bulb C would turns off and bulb A would stay on
Both bulb A and bulb C would turn off
Both bulb A and bulb C would turn off
- 32. Multiple Choice
Ohm's Law states that
the potential difference equal to current multiply resistance
the potential difference is proportional to the current
the potential difference is proportional to the current at constant temperature
the potential difference increase with resistance
- 33. Multiple ChoiceIf you decreases the resistance of a circuit, what happens?Current decreasesCurrent increasesElectrons disappearBulbs get brighter
- 34. Multiple Choice
Which light bulb is the brightest?
Bulb A
Bulb B
Bulb C
They are all the same
- 35. Multiple Choice
What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?
1/4 A
144 A
4 A
0.4 A
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