Font size
WorksheetsMagnetism Review
Total questions: 51
Worksheet time: 1hrs 25mins
Lines of force representing the magnetic field around a magnet is called
magnetic field lines
magnetic pole
ALINCO Magnet
electromagnet
The end of the magnet which produces magnetic force
magnetic pole
magnetic field
electromagnet
magnetic domain
The space around a magnet through which magnetic forces acts
magnetic field
magnetic field lines
ALNICO Magnet
magnetic domain
A magnetic made up of aluminum, nickel, and cobalt
ALNICO Magnet
magneto
blue magnet
red and blue magnet
A cluster of atoms which have aligned magnetic fields
magnetic domain
magnetic pole
electromagnet
transformer
A current carrying coil of wire
transformer
generator
motor
electromagnet
The difference between the location of the true North pole and the magnetic North pole
magnetic declination
magnetic pole
magnetic field
magnetic domain
Also known as the Northern Lights, colored lights are seen in higher altitudes due to charged particles interacting with Earth's Magnetic Field in the upper atmosphere
aurora borealis
North Pole
Equator
laser lights
An iron core with two coils of wire; it step up and steps down voltage
transformer
generator
motor
electromagnet
Generating electricity by moving a coil of wire in a magnet's magnetic field
electromagnetic induction
magnetic pole
aurora borealis
transformer
How are magnetic poles similar to electric charges?
like poles repel
opposite poles attract
like poles attract
both forces acts over a distance
opposite poles repel
What is the important difference between electric charges and magnetic poles?
electric charges can be separated
electric charges can not be seperated
magnetic poles can be seperated
magnetic poles can not be separated
if you break a magnet in half you get two smaller magnets
How is the magnetic field oriented around a magnet?
magnetic field lines leave the north pole and enter the south pole
magnetic field lines leave the south pole and enter the north pole
no magnetic field lines exists
magnets don't have any poles
How can you "see" the magnetic field around the magnet?
sprinkle iron filings over it
hold it up to the lights and place nail next to it
use a microscope near a magnetic
build a circuit and use a battery next to a magnet
How are magnetic field the strongest?
the field is strongest at the poles
strongest away from the poles
field is strongest in the middle of the magnet
field is strongest after two magnets are stuck together
What is the smallest magnet?
electron
proton
bar magnet in a credit card
neutron
How are magnetic fields created?
moving charges create the magnetic field
spinning electrons
tapping two magnets next to each other
magnetic cut in two bars
Why is iron magnetic?
iron contains 4 unpaired electrons
iron contains 4 unpaired protons
iron is flexible
iron is gray and that what makes it magnetic
Which of the following bars is magnetic?
Which of following bars are not magnetic?
Can a nonmagnetic material be made magnetic?
yes, if the magnet is made of aluminium
no, because the magnetic domains are moving electrons
yes, if the magnetic domains become aligned in the same direction
yes, if the magnetic domains are scattered
no, because the magnetic domains are aligned
How can a permanent be destroyed or weakened?
heating it
freezing it
dropping it
hammering it
putting it in water
Who discovered that electricity moving through a wire caused a magnetic field?
Oerstead
Gilbert
Newton
Tesla
What happens to the magnetic field around a current carrying wire if the current is reversed?
the direction of the magnetic field reverse
the direction of the current changed
The domains becomes scattered
What converts electrical energy to mechanical energy?
generator
motor
electron
magnet
transformer
What converts mechanical energy to electrical energy?
generator
motor
transformer
magnet
What causes Earth's magnetic field?
the sun rays
compass needles that sits on a pivot
the motion of charged particles within the molten part of Earths crust
iron filing in the ocean
What factors affect the strength of an electromagnet?
number of loops
amount of current
presence of iron core
magnetic bar
horseshoe magnet
Who discovered electromagnetic induction?
Michael Faraday
Han Christian Orested
Sir Issac Newton
William Gilbert
Which are the two ways to generate a current in a wire?
move a wire in and out of a magnet
move a magnet in and out of a coil of wire
move a magnet near a compass
sprinkle iron near a bar magnet
What kinds of current does an electric generator produce?
alternating current
direct current
How do you use your right hand to determine the magnetic field around a current-carrying wire?
your thumb points in the direction of the current
the fingers curl in the direction of the magnetic field
your fingers points in the direction of the current
your thumb curls in the direction of the magnetic field
Draw a bar magnet and show its field lines
Draw a magnetic field between two north poles.
Draw the magnetic field between a north and south pole.
A wire, 0.60 m long, is at right angles to a uniform magnetic field of magnetic induction equal to 0.400 T. The current through the wire is 4.00 A. What is the force that acts on the wire?
0.96 N
2.6 N
6 N
4N
A wire, 2.0 m long, carries a current of 12 A. The wire is at right angles to a uniform magnetic field which has a force of 0.50 N. What is the strength of the magnetic field?
0.021 T
12 T
0.0833 T
3 T
A wire is at right angles to a magnetic field, the force of which is 0.96 N. A current of 5.6 A flows through the wire. The induction of the magnetic field is 0.37 T. What is the length of the wire?
0.46 m
5.746 T
0.063 T
14.52 T
An electron with a charge of 1.6 x 10 -19 C moves at right angles to a uniform magnetic field with an induction of 0.75 T. It is has a velocity of 4.8 x 10 7 m/s, what is the force acting on the electron?
5.76 x 10-12 N
2.5 x 10-27 N
2.25 x 1026 N
1.024 x 10-11 N
