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Worksheets4th Mag/Elect
Total questions: 26
Worksheet time: 13mins
Name
Class
Date
1.
An unbroken path through which negative charges can flow is a
a)
circuit
b)
series
c)
conductor
d)
resistor
2.
This reduces the amount of electricity that can flow through an object
a)
resistor
b)
conductor
c)
current
d)
negative energy
3.
This type of material does not allow electricity to flow through it
a)
insulator
b)
resistor
c)
conductor
d)
non-electric
4.
When a ____ flows through a circuit a magnetic field is caused
a)
current
b)
protons
c)
water
d)
battery
5.
An object with the same number of negative and positive electrons is said to be
a)
neutral
b)
positive
c)
negative
d)
none of these
6.
This is a material that allows electricity to flow easily through it
a)
conductor
b)
resistor
c)
circuit
d)
contender
7.
An object with 21 positive charges and 20 negative charges is
a)
positively charged
b)
negatively charged
c)
balanced
d)
neutral
8.
Every circuit needs:
a)
an unbroken path and a power source
b)
a power source only
c)
an electric outlet to plug into
d)
an unbroken path and a wire
9.
A parallel circuit has only one path
a)
true
b)
false
10.
The continuous flow of negative charges through a material is called
a)
current electricity
b)
balanced elecrons
c)
static electricity
d)
negative energy
11.
Which is more useful in everyday life?
a)
current electricity
b)
static electricity
12.
Magnetism and electricity are NOT related at all
a)
true
b)
false
13.
Only some magnets have both a north and south pole
a)
true
b)
false
14.
Two objects with the same type of charge will
a)
repel each other
b)
attract each other
c)
neither
d)
both
15.
Electric power plants _______ using generators operated by water, steam or wind.
a)
produce energy
b)
make magnets
c)
start fires
d)
produce lightening
16.
Magnetic force is strongest at the ____ of a magnet
a)
poles
b)
middle
c)
inside
d)
outside
17.
A magnet is an object that can attract _____
a)
iron
b)
copper
c)
alumninum
d)
plastic
18.
The ends of a magnet are called its
a)
poles
b)
sides
c)
magnetic forces
d)
points
19.
The _____ is the area around a magnet where the force of the magnet can act
a)
magnetic field
b)
magnetic position
c)
poles
d)
electromagnet
20.
The force caused by a magnet is known as its
a)
magnetism
b)
stregnth
c)
polarity
d)
capacity
21.
Using a coil of wire and a magnet, one could produce electricity. This is known as
a)
a generator
b)
an electromagnet
c)
a battery
d)
an extension cord
22.
A wire coiled around a nail and attached to an electric current would produce _____
a)
a generator
b)
an electromagnet
c)
a furnace
d)
an electric wire
23.
An electromagnet is a ____
a)
temporary magnet
b)
permanent magnet
c)
power source
d)
fuel source
24.
Magnets be used to produce electricity by
a)
moving a magnet through a coil of wire and moving a coil of wire through a magnetic field
b)
plugging them into a power source
c)
rubbing them together
d)
...this can't be done!
25.
Name some things that use electromagnets
a)
phone, tv, doorbells, computers
b)
refrigerators, ovens, stoves
c)
file cabinets, staplers, scissors
d)
railroads, roadways, lakes
26.
A series circuit has how many paths?
a)
1
b)
2
c)
3
d)
4
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