3rd Q Exam Review Question Preview (ID: 41591)


Electromagnetism. TEACHERS: click here for quick copy question ID numbers.

A magnet that can have its magnetic field 'turned on and off' is also known as
a) a temporary magnet
b) a permanent magnet
c) A North pole magnet
d) A South pole magnet

The magnetic field around a permanent magnet
a) Goes from the South pole to the North pole
b) Goes from the North pole to the South pole
c) Makes circles around the middle of the bar magnet
d) Makes circles around just the North pole

If electrical current was going up in a wire, the magnetic field would
a) go clockwise around the wire
b) go to the right of the wire
c) go counter clockwise around the wire
d) go to the left of the wire

The force on a wire is 15N. The field made is 2.5T and the current is 1.5A. How long is it?
a) 0.25m
b) 4.0m
c) 9.0m
d) 25m

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) 25N
b) 1.4N
c) 0.078N
d) 18N

'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) Coloumb's Law
c) Newton's Law of Universal Gravitation
d) Einstein's Law

In the second right hand rule, your thumb points in the direction of the
a) magnetic field
b) electric field
c) current
d) resistance

in the second right hand rule, your fingers curl in the direction of the
a) current
b) electric field
c) resistance
d) magnetic field

Which is true regarding magnets?
a) Opposite poles attract
b) Like poles attract
c) Opposite poles repel
d) Two South poles would attract

Why does a compass point North?
a) It is where the North pole is located
b) It is where the South pole is located
c) It is where the magnetic North pole is located
d) It is where the magnetic South pole is located

This device converts electrical energy to mechanical energy
a) A motor
b) A switch
c) A generator
d) A battery

This device converts mechanical energy to electrical energy
a) A motor
b) A switch
c) A generator
d) A battery

Where is the strength around the permanent magnet the greatest?
a) In the middle of the magnet
b) At only the North Pole
c) It is the same at all locations around the magnet
d) At the poles

Lines of the magnetic field around a current carrying wire
a) make a circle
b) are parallel to the wire
c) are directed away from the wire
d) are directed towards the wire

The South pole of a magnet will be
a) repelled by a North pole
b) attracted to a North pole
c) unaffected by another magnet
d) attracted to another South pole

Which case would cause an attractive force?
a) two protons
b) Two electrons
c) two North pole magnets
d) A proton and an electron

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