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- 1. Multiple Choice
What does the thumb indicate in flemings left hand rule?
Force
Motion
Current
Magnetic field direction
- 2. Multiple Choice
What direction is the force/motion in the following diagram?
Perpendicular to the magnets
Downwards
Parallel and through the magnets
- 3. Multiple Choice
What angle must there be between a magnetic field and a conductor in order for the maximum force to be exerted?
180
45
90
270
- 4. Multiple Choice
Which rule can be used to work out which way a coil of wire rotates in a motor?
Fleming's left-hand rule
Fleming's right-hand rule
- 5. Multiple Choice
How does a split ring commutator work?
Swaps the contact evert full turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.
Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil do not experience a force in the same direction.
Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.
- 6. Multiple Choice
Which action will increase the deflection of the galvanometer pointer?
The magnetic pole is reversed
The number of turns of coils is increased
The coil is made from insulated wire
The magnet is slowly pushed into the coil
- 7. Multiple ChoiceThe voltmeter is at 0 in this image. How would you manipulate the experiment to create electricity (measured in volts)?Flip the magnet around so the North pole is facing outMove the magnet back and forthTake the magnet outAdd more coils around the paper cylinder
- 8. Multiple ChoiceWhat would happen if I move a bar magnet in and out of a coil of copper wire?Electric current would disappearThe magnet would explodeElectric current will flow through the wireIt would produce a gravitational field
- 9. Multiple Choice
A voltage is created in a wire when...
it cuts through magnetic field lines
it moves parallel to magnetic field lines
it is stationary in a magnetic field
a wire moves anywhere
- 10. Multiple Choice
Main difference between the motor effect and EM induction
Motor effect: current + magnetic field = motion
Induction: motion + magnetic field = current
Motor effect: current + motion = magnetic field
Induction: motion + magnetic field = current
Motor effect: current + motion = magnetic field
Induction: motion + magnetic field = no effect
- 11. Multiple ChoiceThe current in the green wire flows from the left to the right. What direction does the wire move?UpDownInto the pageOut of the page
- 12. Multiple Choice
The diagram show the direction of magnetic field, B and current, I.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
no force produced
downward
into the page
out from the page
- 13. Multiple Choice
The diagram show the direction of magnetic field,B. The current is going into the page.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
no force produced
right
into the page
out from the page
- 14. Multiple Choice
For the motor effect, there must be some form of power source
True
False
- 15. Multiple ChoiceWhile electric current is flowing through a wire, what surrounds the wire?a magnetic fielda glowing lightneutronsprotons
- 16. Multiple ChoiceWhat is the device seen here?generatorelectric motorelectromagnetmagnet
- 17. Multiple ChoiceHow could the experimenter increase the amount of electricity being induced by this experiment?Increase the number of coilsDecrease the number of coilsFlip the magnet aroundNothing, the amount of electricity cannot be increased
- 18. Multiple Choice
To demonstrate electromagnetic induction, you need a power source
True
False
- Answer choicesTagsAnswer choicesTags