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3rd Q Exam Review
Test Description: Electromagnetism
Instructions: Answer all questions to get your test result.
1) The South pole of a magnet will be
A
attracted to another South pole
B
repelled by a North pole
C
attracted to a North pole
D
unaffected by another magnet
2) Lines of the magnetic field around a current carrying wire
A
are directed away from the wire
B
make a circle
C
are directed towards the wire
D
are parallel to the wire
3) Where is the strength around the permanent magnet the greatest?
A
In the middle of the magnet
B
It is the same at all locations around the magnet
C
At the poles
D
At only the North Pole
4) This device converts mechanical energy to electrical energy
A
A motor
B
A switch
C
A generator
D
A battery
5) This device converts electrical energy to mechanical energy
A
A battery
B
A generator
C
A motor
D
A switch
6) Why does a compass point North?
A
It is where the magnetic North pole is located
B
It is where the magnetic South pole is located
C
It is where the South pole is located
D
It is where the North pole is located
7) in the second right hand rule, your fingers curl in the direction of the
A
current
B
magnetic field
C
resistance
D
electric field
8) In the second right hand rule, your thumb points in the direction of the
A
resistance
B
current
C
magnetic field
D
electric field
9) 'The magnetic field in an induced current in a conductor will oppose a change in the applied magnetic field' is known as
A
Lenz's Law
B
Einstein's Law
C
Coloumb's Law
D
Newton's Law of Universal Gravitation
10) The magnetic field around a permanent magnet
A
Makes circles around just the North pole
B
Goes from the North pole to the South pole
C
Makes circles around the middle of the bar magnet
D
Goes from the South pole to the North pole
11) Find the force on a current carrying wire if the wire is 1.4m, the field made is 6.0T, and there is 3.0A passing through it
A
18N
B
25N
C
0.078N
D
1.4N
12) The force on a wire is 15N. The field made is 2.5T and the current is 1.5A. How long is it?
A
9.0m
B
4.0m
C
25m
D
0.25m
13) If electrical current was going up in a wire, the magnetic field would
A
go to the right of the wire
B
go clockwise around the wire
C
go counter clockwise around the wire
D
go to the left of the wire
14) A magnet that can have its magnetic field 'turned on and off' is also known as
A
A North pole magnet
B
A South pole magnet
C
a temporary magnet
D
a permanent magnet
15) Which is true regarding magnets?
A
Two South poles would attract
B
Like poles attract
C
Opposite poles repel
D
Opposite poles attract
16) Which case would cause an attractive force?
A
Two electrons
B
two North pole magnets
C
two protons
D
A proton and an electron
*select an answer for all questions
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