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Electromagnetism Practice Test

Total questions: 20

Worksheet time: 3600secs

Name
Class
Date
1.
Which best describes a parallel circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from one source. 
c)
Electricity flows along more than one pathway. 
d)
The flow of electricity comes from more than one source. 
2.
What is one problem with using a series circuit? 
a)
It has a lot of series. 
b)
If one goes down, they all go down! 
c)
It doesn't work properly.
d)
There are no problems. 
3.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
4.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
5.
What is the unit for resistance?
a)
Volts
b)
Amperes
c)
Ohms
6.
Electricity is the flow of _________.
a)
protons
b)
neutrons
c)
electrons
7.
How many volts are in a circuit with a battery that has a resistance of 10 Ohms and a current of 2 Amps? 
a)
.5 Volts
b)
5 Volts
c)
20 Volts
8.
Which formulas represents Ohm's law?
a)
V=IR
b)
R=IV
c)
I=RV
9.
Identify the insulator below.
a)
aluminum foil
b)
paperclip
c)
rubber eraser
10.
Identify the conductor below.
a)
cloth rag
b)
plastic bottle
c)
gold ring
11.
The unit for current is the 
a)
Volt
b)
Ohm
c)
Electron
d)
Amp
12.
This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?
a)
3 Amps
b)
192 Amps
c)
2 Amps
d)
4 Amps
13.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
c)
2500Ώ
d)
550Ώ
14.

Which object(s) have magnetic fields?

a)

Electric Charges

b)

Magnets

c)

Both Electric Charges & Magnets

d)

Magnetic fields do not exist

15.

A(n) ___ converts electricity into magnetism.

a)

electric transformer

b)

electric generator

c)

electromagnet

d)

electric motor

16.

Electric charges must ___ in order to create an observable magnetic field.

a)

exist

b)

be moving

c)

be stationary

d)

disappear

17.

What must occur for a magnetic field to induce an electric current?

a)

The magnetic field must be really big

b)

The magnetic field must be stable

c)

The magnetic field must be changing

d)

The magnetic field must be from a permanent magnet

18.

What would happen if you broke a bar magnet into 8 pieces?

a)

You would have 8 half magnets

b)

You would have 4 complete magnets

c)

You would have 8 complete magnets

d)

They wouldn't be magnets anymore

19.
The current going through the 45 ohm resistor is 
a)
0.05 amps
b)
0.2 amps
c)
0.1 amps
d)
5 amps
20.
The total current going through the battery of this circuit is
a)
0.35 amps
b)
0.0286 amps
c)
0 amps
d)
9 amps