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Electricity

Total questions: 46

Worksheet time: 32mins

Name
Class
Date
1.
A particle that carries a negative electric charge is called a(n) ______.
a)
neutron
b)
atom
c)
proton
d)
electron
2.
When you charge an electroscope by touching it with a charged balloon, the process is called _____.
a)
friction
b)
conduction
c)
induction
d)
grounding
3.
The potential difference that causes charges to move in a circuit is ___.
a)
voltage
b)
resistance
c)
current
d)
electric discharge
4.
An example of a voltage source is a _____.
a)
voltmeter
b)
battery
c)
resistance
d)
switch
5.
A circuit that is connected to Earth is said to be _____.
a)
series
b)
parallel
c)
grounded
d)
discharged
6.
A neutral object becomes negatively charged when it loses electrons.
a)
true
b)
false
7.
Electrical resistance is low in a good conductor.
a)
true
b)
false
8.
A circuit breaker contains a thin strip of metal that melts if too much current passes through it.
a)
true
b)
false
9.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
10.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
11.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
12.
If the lights are on, the circuit is
a)
closed
b)
open
13.
If the lights are off, the circuit is
a)
closed
b)
open
14.
The flow of electricity requires a
a)
complete path
b)
incomplete path
c)
insulated current
15.
When socks get stuck to towels in your dryer, this is an example of________________
a)
current electricity
b)
static electricity
16.
What is the major difference between static electricity and current electricity?
a)
Current electricity involves a continuous flow of neutrons; static electricity is a sudden transfer of protons
b)
Current electricity can be deadly; static electricity is almost always safe
c)
In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons
d)
Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons
17.
Current electricity flows through
a)
wires
b)
string
c)
rubber
d)
plastic
18.
Electricity flows from which side of the battery?
a)
negative
b)
positive
c)
I have no idea
19.
A material in which electrons are able to move easily
a)
Circuit
b)
Insulator 
c)
Resistance 
d)
Conductor 
20.
A material in which electrons are not able to move easily 
a)
Circuit 
b)
Insulator 
c)
Resistance 
d)
Conductor
21.
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 
22.
According to this law, the current in a circuit equals the voltage difference divided by the resistance. 
a)
Law of Conservation of Energy 
b)
Ohm's Law 
c)
Law of Conservation of Charges
d)
Newton's First Law 
23.
What is the unit for resistance?
a)
Volts
b)
Amperes
c)
Ohms
24.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
25.
Which formulas represents Ohm's law?
a)
V=IR
b)
R=IV
c)
I=RV
26.

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.

27.
Identify the conductor below.
a)
cloth rag
b)
plastic bottle
c)
gold ring
28.
Identify the insulator below.
a)
aluminum foil
b)
paperclip
c)
rubber eraser
29.
Thicker wires have _______ resistance than thinner wires.
a)
more
b)
less
c)
the same
30.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
31.
Which subatomic particles have a positive charge?
a)
neutrons
b)
electrons
c)
protons
32.
Electricity is the flow of _________.
a)
protons
b)
neutrons
c)
electrons
33.

The part of the battery that contains ions. Often made from salts or acids...

a)

Electrodes

b)

Electrolyte

34.

Metals are good ____________ of electricity and heat.

a)

Conductors

b)

Insulators

35.

Poor conductors of electricity and heat are called...

a)

Conductors

b)

Insulators

36.

True or False: Batteries are what keeps your device working when it's not connected to the wall.

a)

True

b)

False

37.

Stored energy

a)

radiant

b)

chemical

c)

potential

d)

kinetic

e)

sound

38.

Energy of motion

a)

radiant

b)

chemical

c)

potential

d)

kinetic

e)

sound

39.

All electrical plugs have at least _________ prongs

a)

1

b)

2

c)

3

d)

4

40.

There are two main types of cells, ____________ cells and _______ cells.

a)

super, resistive

b)

dry, wet

c)

cold, hot

d)

damp, not damp

41.

In dry cells, the electrolyte is a (a)   .

42.

Electrons will always flow from the _________ terminal to the ____________ terminal

a)

negative, positive

b)

positive, negative

43.

what is this source ?

a)

battery

b)

dry cell

c)

accumulator

d)

solar cell

44.

what is this?

a)

accumulator

b)

dry cell

c)

generator

d)

battery

45.

what is the main energy source on earth?

a)

water

b)

heat

c)

sun

d)

light

46.
a cell that has a liquid electrolyte
a)
wet cells
b)
dry cells
c)
electrolytes
d)
electrodes

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