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Magnetism And Intro To Electricity
Test Description: Magnetism and Intro to Basic Electricity Concepts
Instructions: Answer all questions to get your test result.
1) The regions on a magnet where the magnetic force exerted is the strongest are called what?
A
north, sounth, east, and west
B
magnetic poles
C
magnetic domains
D
magnetic force lines
2) What is probably the largest object we know of that functions as a magnet?
A
giant magnets in labs
B
a compass
C
the Earth
D
the moon
3) Which is a correct statement?
A
There is a huge bar magnet imbedded in the axis of the Earth.
B
Two north poles or two south poles of any magnets attract each other.
C
If you cut a magnet in two pieces it destroys the magnetic properties of the magnet.
D
The north pole of one magnet will attract the south pole of another magnet.
4) The hundreds and hundreds of small areas containing a north and a south region within a given piece of magnetic material such as iron or nickel are called:
A
ranges
B
domains
C
poles
D
magnets
5) How is a non-magnetized iron nail made into a magnetized one?
A
Dipped in special paint.
B
Put on top of paper and floated in a small amount of water.
C
Aligned with a magnet or electric current passed through so domains line up.
D
Stored for a long period of time next to a magnet.
6) Electric current is the movement of what along a path?
A
protons
B
magnets
C
atoms
D
electrons
7) Which does not apply as a description of alternating current?
A
Normally generated at large power plants.
B
The type used when you plug something into a wall outlet in your home.
C
The current switches directions at a frequency of 60 cycles per second.
D
The type used when you power something with batteries.
8) If a magnet is moved near a wire, a current can be created. This process is called what?
A
transformation
B
electromagnetic induction
C
magnetic field lines production
D
generation
9) What type of metal is used most often for wires for conducting electricity?
A
zinc
B
copper
C
gold
D
nickel
10) For what reason is copper a good choice for wire for conducting electricity?
A
It is very inexpensive and easy to find.
B
It has an outer shell electron that moves fairly easily.
C
Its electrons stay in one place so they are easy to make move when needed.
D
It conducts better than any other substance known to man.
*select an answer for all questions
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