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Worksheetsmagnetism
Total questions: 39
Worksheet time: 25mins
The strongest part of a magnet is...
If positive x-axis is symbolized as current flow and positive z-axis is symbolized as magnetic field direction. then the direction of the Lorentz force is symbolized as ....
positive x-axis
negative y-axis
positive y-axis
negative z-axis
A coil of wire acts like a magnet when __________________ flows through it.
water
current
voltage
food
You can make an electromagnet stronger by: using a __________________ material for the core.
soft
conducting
magnetic
hard
A positive charge moving toward the bottom of the page encounters a magnetic field pointed toward the right of the page. What direction does the charge get pushed?
up
down
into the page
out of the page
A 2 C charge moving at 15 m/s enters into a magnetic field of strength 5 T. What is the maximum force experienced by this charge?
150 N
150 N into the page
360 N
360 N out of the page
In what direction is the electric current flowing according to right hand rule 2?
Up
Down
Left
Right
Two long parallel wires carry currents in opposite directions. The top wire carries a current to the left, while the bottom wire carries a current to the right. The wires are not touching. Do the wires attract each other or repel?
Attract
Repel
A 2.0 m long wire carrying 10 A of current moves through an 6.0 T magnetic field. What is the magnetic force acting on the wire?
10 N
120 N
0.5 N
2 N
Generators are devices that convert ______ energy into ______ energy.
What causes magnetism?
the sun
moving neutrons
moving charges
friction
A sphere of gold is brought close to a powerful magnet . The sphere will experience?
zero force
Repulsive force
Attractive force
Oscillating force
The angle between the earth's magnetic and geographic axes is :
zero
170
230
710
The temperature at and above which a ferromagnetic material becomes a paramagnetic is called:
critical temperature
inversion temperature
curie temperature
debye temperature
The dip angle at the magnetic poles :
00
900
450
600
The ratio of magnetic flux density to the strength of magnetising field is called :
Magnetic potential
Magnetic permeability
Magnetic susceptibility
Magnetic hysteresis
A thin bar magnet of length 2L is bent at the midpoint so that the angle between them is 600. The new length of the magnet is :
(2)1/2 L
(3)1/2 L
2L
L
A bar magnet of magnetic moment 80 units is cut into two halves of equal length: the magnetic moment of each half will be
80 units
40 units
60 units
20 units
The SI unit of electric current is ______
Joule
Ampere
Magnetism
Kilometer
This is the circuit symbol for ...
an AC current source
a DC current source
a battery
a single cell
A conductor is a____
material that does not allow electrons to flow easily.
material that allows electrons to flow easily.
device the detects an electric charge.
device the changes voltage.
A circuit made of wires, a lamp, a switch, and a cell is shown at the right. What change is needed for the lamp to glow?
The switch needs to be opened.
The switch needs to be closed.
The cell needs an insulator.
The wire needs to be connected to the bottom of the cell.
This is an example of what type of circuit?
Simple
Series
Parallel
The light bulbs are examples of what in the circuit?
Voltage
Resistor
Switch
Path
A freely suspended magnet always rests in the _____ direction.
South - East
East - West
North - South
West - South
