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FORMATIVE: Electricity

Total questions: 55

Worksheet time: 46mins

Name
Class
Date
1.

What is electricity?

a)

an object that electrons do not flow through

b)

energy created by moving charged particles

c)

when two objects repel each other

d)

a circuit that has only one path for electricity to flow

2.

Which of the following is a conductor?

a)

wood

b)

rubber

c)

metal

d)

plastic

3.

Which of the following is an insulator?

a)

an eraser

b)

a wire

c)

a penny

d)

a metal spoon

4.

A parallel circuit has more than one path for electricity to flow

a)

true

b)

false

5.

Imagine you are creating a circuit. It works and the light bulb turns on. Then you add a piece of plastic to the circuit, and the light bulb does not turn on. We can infer that the plastic is

a)

an insulator

b)

a conductor

c)

an electron

d)

static electricity

6.

Items that have the same charge will do what?

a)

attract

b)

repel

7.

Items that have opposite charges do what?

a)

attract

b)

repel

c)

nothing changes

8.

What type of electric circuit only has ONE path for the electricity to flow?

a)

series

b)

parallel

c)

open

d)

none of the above

9.

Electrons will move easily through Aluminum. Based on this, we know Aluminum is a(n)

a)

conductor

b)

insulator

10.
The charge of an electron is 
a)
positive. 
b)
negative. 
c)
Electrons have no charge
11.
An atom loses an electron.  What type of charge does it have now?
a)
positive
b)
negative
12.
An atom gains an electron.  What type of charge does it have now?
a)
positive
b)
negative
c)
No charge
13.
Which of the following is not a good conductor of electricity?
a)
copper
b)
silver
c)
Glass
d)
aluminum
14.
The law of conservation of charge states that...
a)
all atoms have more protons than electrons
b)
only protons can be rubbed off of an atom
c)
charge cannot be created or destroyed
d)
charge cannot be transferred 
15.

An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________

a)

positively charged because it has excess electrons

b)

negatively charged because it has excess electrons

c)

positively charged because it has a deficiency of electrons

d)

negatively charged because it has a deficiency of electrons

16.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
17.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
18.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
19.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
d)
light
20.
What types of charges attract?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Positive and Negative
21.
What word means how fast the electrons flow.
a)
Current
b)
Voltage
c)
Resistance
d)
Power
22.
What is voltage measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
23.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
24.

Which of the following can move from one atom to another?

a)

protons

b)

neutrons

c)

electrons

d)

the nucleus

25.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
26.
If an object has the same number of positive and negative charges, its electrical charge is...
a)
positive
b)
negative
c)
neutral or no charge
d)
opposite
27.
Which type of charges do these balloons have?
a)
like charges
b)
opposite charges
28.

An object has 20 protons and 25 electrons.

a)

positive

b)

negative

c)

neutral

29.

An object has 16 positives and 16 negatives.

a)

positive

b)

negative

c)

neutral

30.

Do two positve charges attact or repel?

a)

attract

b)

repel

c)

neither

31.

Electrons flows from

a)

detect electric current

b)

negative terminal to positive terminal

c)

positive terminal to negative terminal

d)

the flow rate of electric charges through a conductor

32.

Which of these materials is a good insulator?

a)

gold

b)

copper

c)

silver

d)

plastic

33.

In a series circuit, what will happen if the path for the electrical current is broken by a burned out bulb?

a)

The electrical current will stop fllowing and none of the bulbs will light up.

b)

The electrical current will continue flowing and the other bulbs will light up.

c)

The energy source will continue to move the electric charge through the circuit.

34.

What is electricity?

a)

an object that electrons do not flow through

b)

energy created by moving charged particles

c)

when two objects repel each other

d)

a circuit that has only one path for electricity to flow

35.
During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...
a)
the plastic strip acquired extra protons from the cotton.
b)
the plastic strip acquired extra protons from the charging process 
c)
protons were created as the result of the charging process
d)
the plastic strip lost electrons to the cotton during the charging process 
36.

An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________

a)

positively charged because it has excess electrons

b)

negatively charged because it has excess electrons

c)

positively charged because it has a deficiency of electrons

d)

negatively charged because it has a deficiency of electrons

37.
Pick the correct sentence.
a)
This circuit will work because it is a closed circuit.
b)
Energy will freely flow in this circuit.
c)
This circuit will not work because there is no energy source.
d)
This circuit will not work because there is no switch.
38.
What will happen if one light bulb is removed from this circuit?
a)
The other bulbs will go out.
b)
The other bulbs will stay on
c)
The other bulbs will get dimmer.
d)
The battery will become stronger.
39.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
40.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
41.

A student begins an experiment by rubbing a balloon in his hair.

He brings that balloon close to another balloon and the two balloons go away from each other. What conclusion can this student draw from his observation?

a)

Both of the balloons have no electrical charge

b)

One balloon is electrically-charged, while the other balloon has no charge

c)

The balloons have opposite charges

d)

The balloons have like charges.

42.

Look at the picture. It shows a child at the bottom of a plastic slide. Which statement is supported with evidence from the picture?

a)

Atoms in the child’s hair have opposite charges

b)

Atoms in the child’s hair have like charges

c)

Atoms in the plastic slide have like charges

d)

Atoms in the ground have opposite charges

43.

For an object to have a positive charge, it must ____.

a)

lose electrons

b)

gain electrons

c)

lose protons

d)

gain protons

44.

The positive charge of electricity

a)

proton

b)

electron

c)

nucleus

d)

neutron

45.

Two kinds of current electricity

a)

series

b)

paralell

c)

direct

d)

alternating

46.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
47.
In a series circuit, which of the following will vary based on the resistor?
a)
Power
b)
Voltage
c)
Current
d)
None of the above
48.
A circuit with 3 resistors, 20 Ohms, 10 Ohms, and 20 Ohms are in series. What is the total resistance?
a)
43 Ohms
b)
50 Ohms
c)
60 Ohms
d)
33 Ohms
49.

What is the total resistance of this circuit

a)

.18Ω

b)

5.45Ω

c)

60Ω

d)

6000Ω

50.

Find the total resistance of the circuit

a)

.068Ω

b)

14.6Ω

c)

400Ω

d)

200Ω

51.

Find the total resistance of the circuit

a)

200Ω

b)

100Ω

c)

.063Ω

d)

15.8Ω

52.

What is the total resistance of the circuit?

a)

100Ω

b)

200Ω

c)

.063Ω

d)

15.8Ω

53.

Find the total resistance of the circuit

a)

25Ω

b)

75Ω

c)

100Ω

d)

18.75Ω

54.

Find the total resistance of the Circuit

a)

100Ω

b)

1.09Ω

c)

.92Ω

d)

33Ω

55.

What is the total resistance in this circuit?

a)

25 Ohms

b)

10 Ohms

c)

100 Ohms

d)

50 Ohms

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