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Electricity and magnetism Review

Total questions: 41

Worksheet time: 1hrs 8mins

Name
Class
Date
1.

How many poles does a magnet have?

a)

2

b)

1

c)

4

d)

3

2.

What type of magnet is this?

a)

a bar magnet

b)

a "U" magnet

c)

a horseshoe magnet

d)

a stick magnet

3.
If you drop or heat up a a magnet, what will eventually happen to it?
a)
the magnet will become stronger
b)
the magnet will demagnetize
4.

This is the invisible force that surrounds a magnet and can only be seen by iron fillings

a)

magnetic field

b)

iron field

c)

electric field

d)
none of these
5.
The center of a bar magnet is the strongest
a)
True
b)
False
6.
Magnetic poles and electric charges are similar in that...
a)
like poles repel and opposites attract
b)
magnetic force is equal to electric force
7.
Electricity can be used to create a magnet
a)
True
b)
False
8.
A Magnet can be used to create electricity
a)
True
b)
False
9.
A _________ is a device that produces magnetism by spinning a coil of wire around a nail.
a)
Generator
b)
Electromagnet
c)
Battery
d)
Galvonometer
10.
Generators use __________ to create Electricity
a)
Electricity
b)
Magnetism
c)
Wires
11.
You can make an electromagnet stronger by...
a)
increasing the current through the wire
b)
make the iron core bigger
c)
increase the number of loops around the core
d)
All of these
12.
Magnets stick to any materials that are made of
a)
Iron, Nickel, Copper
b)
Iron, Nickel, Cobalt
c)
Ions, Nickel, Cobalt
d)
Iron, Lead, Cobalt
13.
A material in which electrons are able to move easily
a)
Circuit
b)
Insulator 
c)
Resistance 
d)
Conductor 
14.
A material in which electrons are not able to move easily 
a)
Circuit 
b)
Insulator 
c)
Resistance 
d)
Conductor
15.
Electric current that flows in only one direction. 
a)
Voltage 
b)
Direct Current 
c)
Alternating Current
d)
Series Circuit 
16.
Electric current that reverses its direction of flow in a regular pattern  
a)
Voltage 
b)
Direct Current 
c)
Alternating Current 
d)
Parallel Circuit 
17.
The flow/movement of electric charges 
a)
Voltage
b)
Resistance 
c)
Current 
d)
Circuit 
18.
A closed path that electric current follows 
a)
Voltage
b)
Current
c)
Resistance 
d)
Circuit
19.
The tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light.
a)
Voltage
b)
Current
c)
Resistance
d)
Circuit 
20.

This is electricity that is not moving or in motion

a)
Static electricity 
b)
Electric discharge
c)
Resistance
d)
Circuit 
21.
The unit for current is the 
a)
Volt
b)
Ohm
c)
Electron
d)
Amp
22.
In a ________ circuit there are multiple paths for the current to take.
a)
Series
b)
Parallel
23.
In a _________ circuit, if one bulb goes out then the entire circuit doesn't work.
a)
Series
b)
Parallel
24.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps
25.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
26.
What resistance is needed to cause a 20A current flow because of a 100V battery?
a)
0.2Ώ
b)
2000Ώ
c)
120Ώ
d)
5Ώ
27.
Lightning is an example of _________.
a)
static electricity
b)
current electricity
c)
watts
d)
voltage
28.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
29.

Which formulas is the correct power formula?

a)

R=p/v

b)

P=IV

c)

V=P/I

30.
Which formulas represents Ohm's law?
a)
V=IR
b)
R=IV
c)
I=RV
31.

Which of these will repel each other?

a)

Negatively charged balloon and positively charged sphere.

b)

Negatively charged balloon and neutral sphere.

c)

Negatively charged balloon and negatively charged sphere.

d)

Negatively charged balloon and neutral wall.

32.

If the light bulb in the middle burned out, what would happen to the other two?

a)

The light bulb to the left would stay lit, but the one to the right would turn off.

b)

They would both stay lit.

c)

The light bulb to the right would stay lit, but the one to the left would turn off.

d)

They would both turn off.

33.
Which statement best explains why the lamp does not glow? 
a)
Circuit 1 is an open circuit.
b)
 Circuit 1 is a closed circuit.
c)
 The negative terminal of Circuit 1 is connected to the cell.
d)
The positive terminal of Circuit 1 is connected to the cell.
34.
A switch that opens a circuit by turning itself off is a...
a)
circuit breaker
b)
motor
c)
electromagnet
d)
insulator
35.
Thicker wires have _______ resistance than thinner wires.
a)
more
b)
less
c)
the same
36.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
37.
What is the power of a 20V bulb with 5A through it?
a)
100W
b)
100V
c)
6.3W
d)
6.3A
38.
What is the current through a 11V bulb with a power of 99W?
a)
9W
b)
9A
c)
60V
d)
60A
39.
What would the circuit resistance be if a 7.5 Amp draw was present with the engine running and the charging system producing 15 Volts
a)
15 Ohms
b)
4 Ohms
c)
0.3333 Ohms
d)
2 Ohms
40.

What voltage is needed to cause a 50A current flow through a 10Ω resistor?

a)

15V

b)

500V

c)

500 kV

d)

0.2V

41.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps

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