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- 1. Multiple Choice
The area around a charge in which the electric force is experienced by other charged objects is the
electric force
electric charge
electric field
electric current
- 2. Multiple Choice
Charges flow through a circuit due to differences in
resistance.
potential energy.
conductivity.
insulation.
- 3. Multiple Choice
Why would two electrons repel each other if they were close together?
They have like charges, so they experience an attractive force.
They have opposite charges, so they experience a repulsive force.
They have like charges, so they experience a repulsive force.
They have opposite charges, so they experience an attractive force.
- 4. Multiple Choice
The push or pull that occurs when a magnet interacts with another object is known as the
magnetic force
magnetic field
magnetism
magnet
- 5. Multiple Choice
How is a magnet able to pick up bits of metal without actually touching them?
The magnet is surrounded by an electric field that attracts the metal.
The metal exerts a repulsive force on the magnet.
There is an invisible magnetic field around the magnet where it exerts magnetic force.
The electric force from the magnet attracts the bit of metal.
- 6. Multiple Choice
What do you call the relationship between electricity and magnetism?
static electricity
magnetic current
electric force
electromagnetism
- 7. Multiple Choice
Which of the following descriptions describes electromagnetic induction?
Current running through a wire creates a magnetic field.
Moving a conductor through a magnetic field generates a current through the conductor.
Connecting a conductive wire to both ends of a battery allows current to flow.
Moving north poles of two magnets away from each other decreases potential energy.
- 8. Multiple Choice
A step-down transformer has a voltage of 400 V through the primary coil and 200 V through the secondary coil. There are 5 loops in the secondary coil. How many loops are in the primary coil?
2 loops
5 loops
10 loops
20 loops
- 9. Multiple Choice
Which of the following is NOT a basic part of an electric current?
conducting wires
a transformer
a source of electrical energy
a device that runs on electrical energy
- 10. Multiple Choice
In a typical battery,
the negative end has more electrical potential energy than the positive end.
the negative end has the same amount of electrical potential energy as the positive end.
the positive end has more electrical potential energy than the negative end.
voltage determines which end of the battery has more electrical potential energy.
- 11. Multiple Choice
Atoms that have a positive charge will be ATTRACTED to atoms with a ___________ charge.
positive
negative
neutral
- 12. Multiple Choice
Electric charges that DO NOT move through a current are known as
Magnetic
Electric
Electromagnetism
Static Electricity
- 13. Multiple Choice
What makes an electromagnet stronger?
greater number of loops
smaller number of loops
decreasing the current
decreasing the voltage
- 14. Multiple ChoiceWhich is a conductor?GlassPennyRubber
- 15. Multiple ChoiceA circuit that has two or more paths that electricity can follow.Series CircuitElectromagnetParallel Circuit
- 16. Multiple ChoiceA circuit that has only one path in which electricity can follow is ainsulatorconductorparallel circuitseries circuit
- 17. Multiple ChoiceIf one burned-out bulb causes all of the lights to fail in a circuit, what might you conclude?It is a parallel circuit.More batteries are needed.It is a series circuit.A heavier wire is needed.
- 18. Multiple Choice
A circuit made of wires, a lamp, a switch, and a cell is shown at the right. What change is needed for the lamp to glow?The switch needs to be opened.The switch needs to be closed.The cell needs an insulator.The wire needs to be connected to the bottom of the cell. - 19. Multiple ChoiceThis is the circuit symbol for ...an AC current sourcea DC current sourcea batterya single cell
- 20. Multiple Choicethis is the symbol for a _____?switchlightbatterywires
- 21. Multiple ChoiceA device that uses chemical energy to make electricityConductorBatteryMotorGenerator
- 22. Multiple ChoiceAn electric current that flows in only one directionDirect CurrentParallel CircuitAlternating CurrentOhm
- 23. Multiple ChoiceAn electric current that switches direction rapidlyDirect CurrentAlternating CurrentElectric ChargeResistance
- 24. Multiple Choice
Which of the following is an example of a resistor?
battery
light bulb
wire
switch
- 25. Multiple Choice
Which circuit will not light the bulb?
- Answer choicesTagsAnswer choicesTags