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Sps10b Sps10c

Total questions: 27

Worksheet time: 27mins

Name
Class
Date
1.

In an electrical circuit, if the current is 0.5 A and the voltage is 6 V, what is the resistance?

a)

0.083 ohms

b)

12 ohms

c)

3 ohms

d)

6.5 ohms

2.
A balloon is rubbed all over with wool.  The balloon will now attract wool because the balloon and wool
a)
are magnets
b)
have opposite charges
c)
have like charges
d)
have neutral charges
3.
Which of the following could be used as the core of a simple electromagnet?
a)
drinking straw
b)
iron nail 
c)
a soda bottle
d)
an ink pen
4.
When two magnets attract, they ______________
a)
push apart
b)
change color
c)
get colder
d)
pull together
5.
a)
Series circuit - Bulbs are lit
b)
Series circuit - Bulbs are off
c)
Parallel circuit - Bulbs are lit
d)
Parallel circuit - Bulbs are off
6.
What is voltage?
a)
a measure of electric current
b)
a kind of static elecricity
c)
a kind of current electricity
d)
a measure of potential energy difference
7.
What is the purpose of a switch in an electric circuit?
a)
to allow the circuit to be opened or closed
b)
to change the direction of the current
c)
to provide a push for the current
d)
to increase the electric power to the load
8.
Which of these in an insulator?
a)
a copper wire
b)
a silver spoon
c)
a plastic coating on a wire
d)
an aluminum coating on a wire
9.

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

a)

Remove all the coils and the nail.

b)

Use a smaller battery.

c)

Reverse the poles of the magnet.

d)

Add more coils of wire to the nail.

10.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
11.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
12.
A group of lights are connected in a parallel circuit.  One of the lights is removed.  The rest of the lights will
a)
get brighter
b)
get dimmer
c)
go out
d)
not change
13.

Which one is the circuit diagram of this picture?

a)
b)
c)
d)
14.
this is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
15.
In a parallel circuit if one of the light bulbs burns out the rest _________.
a)
stop the flow of electricity
b)
 can still light up
c)
 will go out
d)
of the light bulbs burn out also
16.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
17.

In an electrical circuit, if the resistance is 500 ohms and the voltage is 6 V, what is the current?

a)

3 kA

b)

83.3 A

c)

0.012 A

d)

506 A

18.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
19.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
20.

How are electromagnets different from magnets?

a)

magnets have a North and South pole

b)

you can turn an electromagnet on/off

c)

magnets are more powerful

21.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
22.
Looking at the drawing. If you tried to move these 2 magnets closer together, what would you feel?
a)
Push Away
b)
Pull Closer together
c)
No Force
d)
Let the Force be with YOU
23.
In a static discharge, which particles move from one object to another?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
24.

In an electrical circuit, if the resistance is 9 ohms and the voltage is 9 V, what is the current?

a)

81 A

b)

1.8 A

c)

18 A

d)

1 A

25.

Surrounding every magnet is a __________ __________.

a)

another magnet

b)

electrical current

c)

magnetic field

26.

In series circuit, the lights are connected ________ to each other.

a)

Side by side

b)

Parallel

c)

Close by

d)

Effectively

27.

What is an electromagnet?

a)

a permanent magnet with a north and south pole

b)

a temporary magnet made from current carrying wire around a magnetic metal core

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