WorksheetsMagnetism and Electromagnetism
Total questions: 17
Worksheet time: 9mins
Magnetic Field lines around a bar magnet:
are perpandicular the the magnet
spread out from north pole and curve to south
Cross back and forth over eachother
are perfectly straight
Magnetic poles that are UNLIKE will:
attract
repel
do nothing
all of these.
As the earth rotates, the magnetic poles:
stay the same
change a little
Switch completely
disappear
The earth is like a magnet because:
It has a magnetic field due to its core
it has a magnetic field do to its crust
There is a magnetic pole in the earth's core
Gravity generates a magnetic field
You can increase the strength of an electromagnet by:
Decreasing the battery charge
Decreasing the amount of loops in the solenoid
Winding the coils more closely
Winding the coils more loosely
On an atomic level, what creates a magnetic force?
gravity
electrons
protons
neutrons
Running electricity through metal produces:
a magnet
a magnetic field
a solenoid
an insulator
What is the difference between a galvanometer and an electric motor?
Electric motor does not require electric current
Galvanometer uses electric energy
In an electric motor, the wire spins
an electric motor uses electric energy
you can inccrease the strength of an electromaget by
Decreasing the current
Decreasing the loops
using a stronger iron (Ferro) material
winding the coils more loosely
DC Current stands for:
Direct Current
Alternating Current
Diametric Current
Induced Current
In the diagram, an electric motor is pictured. This motor works by:
The wire makes the magnets move
The magnets spin and generate electricity
The current causes the wire (Armature) to spin
the magnets take energy directly from the battery
How do Maglev trains go up to 311 MPH?
a train is pulled by a big magnet at the end of the tracks
electric motors push the train and cause it to levitate
Magnetized coils repel magnets on the train which moves it
a generator creates electricity which fuels the train
a magnetic crane picks up pieces of metal in the picture. the crane magnet is made by electrified current and a coil. Most likely, what element is the metal?
copper
steel
aluminum
iron
A magnetic pole is the part of the magnet where the magnetic field is the..
Strongest
Weakest
Most average
Electromagnetic Induction is a technical way to say that we can create a magnetic field using electricity.
True
False
A compass works because of the effect that the moon has on the earth's magnetic field.
True
False
Increasing the number of loops in a solenoid will cause its strength to increase.
True
False
