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WorksheetsUnit 8: Electrical Current & Magnetism
Total questions: 25
Worksheet time: 43mins
Name
Class
Date
1.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
2.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
3.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
4.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
5.
Which statement is true?
a)
Magnetic field lines run from a south pole to a north pole.
b)
Magnetic field lines run from a north pole to a south pole.
c)
There are no magnetic field lines inside a magnet.
d)
Iron is attracted to north pole but repelled from south pole
6.
Magnetism is generated by moving
a)
protons.
b)
electrons.
c)
neutrons.
d)
elements.
7.
What type of circuit is show in the image?
a)
Series Circuit
b)
Parallel Circuit
c)
Open Circuit
d)
Alternating Circuit
8.
If bulb 1 burns out, what will occur?
a)
bulbs 2 and 3 will go out
b)
bulbs 2 and 3 receive more volts
c)
bulbs 2 and 3 will stay lit
d)
nothing will happen
9.
In which circuit would the bulb light up?
a)
Bulb A
b)
Bulb B
c)
Bulb C
d)
Bulb D
10.
If you place the North pole of a magnet next to the South pole of another magnet, they will:
a)
Attract
b)
Repel
c)
Do nothing
d)
Shatter
11.
If the North Pole of a permanent magnet is placed next to a compass as seen in the picture, which direction will the needle move?
a)
Clockwise
b)
Counter-clockwise
c)
It will not move
d)
Need more information
12.
Which direction is the North Pole of this electromagnet?
a)
Right
b)
Left
c)
Up
d)
Down
13.
A galvanometer...
a)
converts electrical energy into mechanical energy
b)
converts mechanical energy into electrical energy
c)
increases or decreases the voltage of an alternating current
d)
is an instrument used to detect current
14.
An electric motor...
a)
converts electrical energy into mechanical energy
b)
converts mechanical energy into electrical energy
c)
increases or decreases the voltage of an alternating current
d)
is an instrument used to detect current
15.
Which statement is true?
a)
Magnetic field lines run from a south pole to a north pole.
b)
Magnetic field lines run from a north pole to a south pole.
c)
There are no magnetic field lines inside a magnet.
d)
Iron is attracted to north pole but repelled from south pole
16.
The atoms of a magnetized substance organize into regions in which the magnetic fields of the atoms are aligned.
a)
spins
b)
domains
c)
energy levels
d)
arrangements
17.
In un-magnetized materials the domains are __________ aligned.
a)
super
b)
slightly
c)
randomly
d)
always
18.
The force of magnetism is stronger when magnets are ________________
a)
cold
b)
round
c)
closer together
d)
farther apart
19.
The atoms of a magnetized substance organize into regions in which the magnetic fields of the atoms are aligned.
a)
spins
b)
domains
c)
energy levels
d)
arrangements
20.
You know this substance is magnetized because
a)
all the domains have right angles
b)
the arrows are drawn in red
c)
the domains are aligned
d)
the domains are random
21.
Voltage can be induced in a wire by
a)
a. moving the wire near a magnet.
b)
b. moving a magnet near the wire.
c)
c. changing the current in a nearby wire.
d)
d. all of these
22.
Electromagnetic induction occurs in a coil when there is a change in
a)
a. electric field intensity in the coil.
b)
b. magnetic field intensity in the coil.
c)
c. voltage in the coil.
d)
d. the coil's polarity.
23.
As the loop of wire moves through the magnetic field, which way will the current flow?
a)
Clockwise
b)
Counter-clockwise
c)
No current will flow
d)
Alternating directions
24.
As the loop of wire moves into the magnetic field, which way will the current flow?
a)
Clockwise
b)
Counter-clockwise
c)
No current will flow
d)
Alternating directions
25.
If the last bulb burns out, the first two bulbs will...
a)
get brighter.
b)
get dimmer/turn off.
c)
remain the same brightness.
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