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- 1. Multiple ChoiceThe process of creating a current in a circuit by changing a magnetic fieldA. electric generatorB. electric motorC. electromagnetic inductionD. magnet
- 2. Multiple ChoiceWhat is created when a magnet moves through a coil of wire?A. an electromagnetB. a ferromagnetC. a solenoidD. an electric current
- 3. Multiple Choice
What kind of magnet can be turned on and off?refrigerator magnetelectromagnetmagnetiteiron - 4. Multiple ChoiceIf you wrap more coils around an electromagnet, it will becomebrighterstrongerweakerinvisible
- 5. Multiple ChoiceWhat is the flow of electricity?electric motorElectric currentElectric eelelectric circuit
- 6. Multiple ChoiceA device that converts electrical energy into kinetic energyA. electromagnetB. electromagnetic inductionC. electric motorD. electromagnetism
- 7. Multiple ChoicePassing an electric current around an iron object will temporarily make the object magnetic.TrueFalse
- 8. Multiple ChoiceMagnetic fields are created by moving _______.AtomsProtonsElectric ChargesMetals
- 9. Multiple ChoiceWhen an electromagnet's circuit is broken, it loses its magnetic properties.TrueFalse
- 10. Multiple ChoiceThe magnetic field of an electromagnet ______.Can be turned on and off.Is permanent.Lasts for only one hour.Lasts for one day.
- 11. Multiple ChoiceElectricity is the flow of ____________.ProtonsNeutronsElectrons
- 12. Multiple ChoiceSeries CircuitParallel Circuit
- 13. Multiple ChoiceThe Law of Conservation of Energy states that...energy can be created when a new power source is introduced.energy can neither be created nor destroyed.energy is destroyed when a circuit is broken.energy can be created using a generator.
- 14. Multiple ChoiceWhat is created when a magnet moves through a coil of wire?A. an electromagnetB. a ferromagnetC. a solenoidD. an electric current
- 15. Multiple ChoiceChoose the best option to complete this gap:
A magnetic field is the ________ around a magnet in which the magnetic force acts.poleelectronareairon - 16. Multiple Choice
How were we able to turn the electromagnet off?
Hooking the wire up to the battery/
Moving the battery further away from metal objects
Disconnecting the circuit to stop current flow
- 17. Multiple ChoiceAccording to the Right Hand Rule, where is the magnetic field generated around a current-carrying wire?Perpendicular to the wireParallel to the wire
- 18. Multiple ChoiceFaraday demonstrated that an electric current can be created by...Having a magnet near byMoving a magnet near a wireHooking a wire up to a batteryRunning a generator
- 19. Multiple ChoiceMotors start with _________ energy and end with ___________ energykinetic, electricelectric, kineticpotential, magneticelectric, magnetic
- 20. Multiple ChoiceA device that increases or decreases the voltage of alternating currentA. magnetB. magnetic poleC. transformerD. magnetic force
- 21. Multiple ChoiceWhat is the transfer of electricity in a generator?Mechanical to ElectricalPhysical to PotentialElectrical to MechanicalYogurt to Light
- 22. Multiple ChoiceWhat can you use to make an electromagnet?Battery, nail and stringBattery, pencil and wireWire, battery and iron ore (nail)Peanut butter, lampshade, hand sanitizer
- 23. Multiple ChoiceIn large generators in power plants, ___________ rotate inside a coil of wire to produce an electric current.WindWaterMagnetsCircuits
- 24. Multiple ChoiceWhich device uses mechanical energy to produce electrical energy?Electric MotorMagnetGeneratorSolar Cell
- 25. Multiple ChoiceWhat force does a magnetic field apply without actually touching the object?a push or pullgravityfrictionpressure
- 26. Multiple ChoiceWhat happens to the strength of an electromagnet as you add more coils around it?IncreasesDecreasesStays the sameStops completely
- 27. Multiple ChoiceWhat is the device seen here?generatorelectric motorelectromagnetmagnet
- 28. Multiple ChoiceWhen two magnets attract, they ______________push apartchange colorget colderpull together
- 29. Multiple ChoiceThis is a picture of a simple electromagnet. How can the electromagnet be made stronger?Add more coils of wire to the nail.Use a smaller battery.Reverse the poles of the magnet.Remove all the coils and the nail.
- 30. Multiple ChoiceSurrounding every magnet is a __________ __________.magnetic fieldelectrical currentanother magnetan enemy
- 31. Multiple ChoiceIf I were to try to connect the north pole of one magnet to the north pole of another magnet, the two poles would:attractrepelneitherflip
- 32. Multiple ChoiceIf I were to try to connect the north pole of one magnet to the south pole of another magnet, the two poles would:attractrepelneitherflip
- 33. Multiple ChoiceWhile electric current is flowing through a wire, what surrounds the wire?a magnetic fielda glowing lightneutronsprotons
- 34. Multiple ChoiceWhat is the flow of electrical charges called?VoltageResistanceCurrent/electricityCircuit
- 35. Multiple ChoiceWhat does a motor do?Moves up and downRotates without electricityIt doesUses electricity to rotate
- 36. Multiple ChoiceWhat is most likely to happen when the switch is closed?A magnetic field should be producedThe nail will rustThe battery will explodeThe wire will catch on fire
- 37. Multiple ChoiceHow are electromagnets different from magnets?magnets can be turned on/offyou can turn an electromagnet on/offmagnets are more powerfulmagnets have a North and South pole
- 38. Multiple ChoiceThis picture is an example of a ___________Step- Up TransformerStep- Down TransformerMotorGenerator
- 39. Multiple ChoiceBased on this picture, which side will have a higher voltage?SecondaryPrimaryBoth sides have the same voltageCannot be determined
- 40. Multiple ChoiceHow do you increase the strength of an electromagnet?Decrease the number of batteries and increase the number of coilsIncrease the electric current and decrease the batteriesYou cannot strengthen an electromagnetIncrease the electric current and increase the number of coils
- 41. Multiple ChoiceWhat is created when a magnet moves through a coil of wire?An electric currentAn electromagnetA solenoidA ferromagnet
- 42. Multiple ChoiceThis picture shows a turbine generator used to produce electricity at a geothermal power plant.
Electricity is produced by using steam to _____________.heat the turbine generatorsspin the turbine generatorsreduce friction in the turbine generatorsreduce emissions from the turbine generators - 43. Multiple ChoiceIn Fleming's Left Hand Rule what does your thumb tell you?CurrentMotionField Direction
- 44. Multiple ChoiceIn Fleming's Left hand Rule what does your first finger tell you?MotionCurrentField Direction
- 45. Multiple ChoiceIn Fleming's Left hand Rule what does your second finger tell you?MotionCurrentField Direction
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