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- 1. Multiple Choice
What is a photon?
charging an object without direct contact between the object and the charge
A small "package" of light energy that acts like a particle
The amount of charge that travels past a fixed point in an electric circuit each second
The ability of a material to impede the flow of charge
- 2. Multiple Choice
Charging by conduction
Charging an object without direct contact between the object and a charge
Charging an object by allowing it to come into contact with an object that already has an electrical charge
Current that flows from the positive side of the battery to the negative side. This is the way current is drawn in circuit diagrams, even though it is wrong.
A circuit that does not have a complete connection between the two sides of the power source. As a result, current dows not flow.
- 3. Multiple Choice
Charging by induction
Charging an object without direct contact between the object and a charge
Charging an object by allowing it to come into contact with an object that already has an electrical charge
Current that flows from the positive side of the battery to the negative side. This is the way current is drawn in circuit diagrams, even though it is wrong.
A circuit that does not have a complete connection between the two sides of the power source. As a result, current dows not flow.
- 4. Multiple Choice
Electric current
The amount of charge that travels past a fixed point in an electric circuit each second
Charging an object by allowing it to come into contact with an object that already has an electrical charge
Current that flows from the positive side of the battery to the negative side. This is the way current is drawn in circuit diagrams, even though it is wrong.
A circuit that does not have a complete connection between the two sides of the power source. As a result, current dows not flow.
- 5. Multiple Choice
Conventional current
The amount of charge that travels past a fixed point in an electric circuit each second
Charging an object by allowing it to come into contact with an object that already has an electrical charge
Current that flows from the positive side of the battery to the negative side. This is the way current is drawn in circuit diagrams, even though it is wrong.
A circuit that does not have a complete connection between the two sides of the power source. As a result, current dows not flow.
- 6. Multiple Choice
Resistance
The ability of a material to impede the flow of charge
Charging an object by allowing it to come into contact with an object that already has an electrical charge
Current that flows from the positive side of the battery to the negative side. This is the way current is drawn in circuit diagrams, even though it is wrong.
A circuit that does not have a complete connection between the two sides of the power source. As a result, current dows not flow.
- 7. Multiple Choice
Open circuit
The ability of a material to impede the flow of charge
Charging an object by allowing it to come into contact with an object that already has an electrical charge
Current that flows from the positive side of the battery to the negative side. This is the way current is drawn in circuit diagrams, even though it is wrong.
A circuit that does not have a complete connection between the two sides of the power source. As a result, current does not flow.
- 8. Multiple Choice
What is a material called that easily carries a current?
insulator
voltage
resistance
conductor
- 9. Multiple Choice
When a glass rod is rubbed with a neutral silk cloth, the glass becomes positively charged. What charge does the silk now have? Why?
It is negative because it lost electrons to the silk through friction
It is positive because it gained electrons from the silk through friction
It is neutral because it gave some of its positivity away.
- 10. Multiple Choice
The force between the south pole of one magnet and the south pole of another is measured. If the distance between those magnets is doubled, how will the new force compare with the old one?
decreases by a factor of 4
increases by a factor of 4
decreases by a factor of 2
increases by a factor of 2
- 11. Multiple Choice
When working with two south poles, are the forces attractive or repulsive?
attractive
repulsive
- 12. Multiple Choice
A physicist charges an object with a positively charged rod. If the object develops a negative charge, how did the physicist charge the object?
It was charged by conduction
It was charged by induction
- 13. Multiple Choice
If a circuit has a low voltage, is there any way to get a lot of energy from it? If so, how?
Yes, if you put a lot of current through it.
No, it has low energy because of the low voltage
Yes, if you move it around a lot
- 14. Multiple Choice
If you have opposite charges, will the charges attract or repel one another?
repel
attract
- 15. Multiple Choice
You're blindfolded & handed two extension cords of equal length. Both have the same current flowing through them. If the cord in your left hand is warmer than your right hand, which cord is thicker?
The cord in your left hand
The cord in your right hand
- 16. Multiple Choice
In most chandeliers today, when one light bulb goes out, the rest stay lit. The light bulbs are wired in...
series
parallel
- 17. Multiple Choice
The atoms in an object are NOT aligned. Is the object a magnet?
Yes
No
- 18. Multiple Choice
You cut a magnet in half - right between the north & south poles. How many north poles and south poles do you now have?
One north pole and one south pole
Two north poles and two south poles
Three north poles and three south poles
Four north poles and four south poles
- 19. Multiple Choice
In a conventional current, the current runs from...
the positive end of the battery (large line) to the negative end of the battery
the negative end of the battery (small line) to the positive end of the battery
- 20. Multiple Choice
The flow of electrons in a current is from...
the positive end of the battery (large line) to the negative end of the battery
the negative end of the battery (small line) to the positive end of the battery
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