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WorksheetsMagnetism/Electromagnetism
Total questions: 20
Worksheet time: 20mins
These magnetic domains are:
strongly magnetized
slightly magnetized
unmagnetized
To make this electromagnet stronger you could:
use less wire
have fewer wire coils around the nail
have more wire coils around the nail
use a plastic core
When running a current through a wire, what do the blue lines represent?
The wire spinning
A magnetic field that was created
Electrons leaving
Electricity
What happens when an electric current flows through a wire?
The wire begins to spin.
Nothing happens.
A field of gravity is created around the wire.
A magnetic field is created around the wire.
What type of core is best for electromagnets?
Steel
Iron
Plastic
Copper
A _______________ is a current-carrying coil of wire with many loops.
magnet
electromagnet
solenoid
compass
Magnetic field lines should NEVER be __________.
pointing from North to South
crossing each other
symmetrical
close together
The diagram shows the application of __________.
Fleming's Left-Hand Rule
Fleming's Right-Hand Rule
Left-Hand Grip Rule
Right-Hand Grip Rule
Using the right hand grip rule, A represents the direction of the
current
magnetic field
Using the right hand rule, B represents the direction of the
current
magnetic field
Using the right hand grip rule, if the current is flowing towards you then the magnetic fields will flow from...
A to D to C to B and around
A to B to C to D and around
A to C to D to B and around
A to C to B to D and around
Using the right hand grip rule, if the current is flowing away from you then the magnetic fields will flow from...
A to D to C to B and around
A to B to C to D and around
A to C to D to B and around
A to C to B to D and around
In the right hand thumb rule, the direction of the current is shown by the (a) .
The production of electric current by a changing magnetic field is called ____________________________________.
induced current
electromotive force
electromagnetic induction
internal resistance
Once a paperclip touches a magnet and becomes a magnet itself, does a paperclip STAY that way? Or does it stop being a magnet?
stay that way forever
stop being a magnet
stay that way for a short time
