Quiz about Electricity

Question 1

Which of the following is the best example of an electrical conductor?

Accepted Answer

steel

Answer

tire

Answer

plastic

Answer

none of the above

Question 2

Which best briefly summarizes the law of electric charges?

Accepted Answer

unlike charges attract

Answer

charges always attract

Answer

charges always repel

Answer

unlike charges repel

Question 3

What kind of circuit is this?

Accepted Answer

series

Answer

parallel

Question 4

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

Accepted Answer

negatively charged

Answer

neutral charged

Answer

positively charged

Answer

no charges at all

Question 5

A ______ opens and closes a circuit.

Accepted Answer

switch

Answer

cell

Answer

conductor

Answer

wire

Question 6

What is this symbol for?

Accepted Answer

battery

Answer

light bulb

Answer

wire

Answer

cell

Question 7

When you remove a bulb from a three bulb circuit, and the other two bulbs go off, then the bulbs must have been connected in parallel.

Accepted Answer

false

Answer

true

Question 8

Electric current is the flow of _________.

Accepted Answer

electrons

Answer

protons

Answer

neutrons

Answer

none of them

Question 9

Electric current is measured in....

Accepted Answer

amperes

Answer

watts

Answer

joules

Answer

newtons

Question 10

When one light bulb burns out, the rest stay lit. The bulbs must be found in ....

Accepted Answer

parallel circuit

Answer

series circuit

Question 11

What kind of circuit is this?

Accepted Answer

parallel

Answer

series

Question 12

Are the currents at A1 and A2 same?

Accepted Answer

Yes, they are same

Answer

No, they are different

Question 13

Which part of the atom revolves outside the nucleus around the outer edge of the atom?

Accepted Answer

electron

Answer

proton

Answer

neutron

Answer

neutrino

Question 14

A quick discharge of electricity through the air is called:

Accepted Answer

lightning

Answer

thunder

Answer

a hydro explosion

Answer

a black hole

Question 15

The push or force of electricity is known as:

Accepted Answer

voltage

Answer

wattage

Answer

amperage

Answer

load

Question 16

Hydro power comes from:

Accepted Answer

water

Answer

the Sun

Answer

batteries

Answer

dolphins

Question 17

If something gains electrons, and has more electrons than protons, that object would be:

Accepted Answer

negatively charged

Answer

positively charged

Answer

neutrally charged

Answer

is under arrest

Question 18

If a thick wire is replace to a thin wire in a circuit, what happens to the light bulb?

Accepted Answer

the bulb becomes dimmer

Answer

it will blow out the bulb

Answer

the bulb becomes brighter

Answer

the bulb does not change

Question 19

The flow of electricity in a circuit-

Accepted Answer

current

Answer

flow

Answer

circuit

Question 20

If bulb 1 burns out, what will occur?

Accepted Answer

bulbs 2 and 3 will stay lit

Answer

bulbs 2 and 3 will go out

Answer

bulbs 2 and 3 receive more volts

Answer

nothing will happen

Question 21

What is static electricity?

Accepted Answer

The buildup of electric charges on an object

Answer

The buildup of neutrons

Answer

Electricity flowing through a current

Answer

Particles staying still

Question 22

What will happen when a light bulb is removed from the circuit below?

Accepted Answer

The brightness of the remaining bulbs will not change

Answer

The remaining bulbs will go out

Answer

The remaining bulbs will brighten

Answer

The remaining bulbs will dim

Question 23

What will happen to the other bulbs in the circuit if one bulb goes out?

Accepted Answer

The other bulbs will go out

Answer

The other bulbs will get brighter

Answer

The other bulbs will get dimmer

Answer

They will flash on and off

Question 24

What is the effect of changing the wire in a circuit from a thick wire to a thin wire?

Accepted Answer

The bulbs become dimmer.

Answer

The overloaded bulb will blow out.

Answer

The bulb brightness stays the same.

Answer

The bulbs become brighter.

Question 25

Copper is used in wiring because it is an excellent______________ of electricity.

Accepted Answer

conductor

Answer

circuit breaker

Answer

insulator

Answer

fuse

Question 26

A small device that stores energy in a chemical form

Accepted Answer

Battery

Answer

Complete circuit

Answer

Switch

Answer

Power source

Question 27

Why do electricians always wrap wires in plastic?

Accepted Answer

Plastic is a good electrical insulator

Answer

Plastic comes in many different colors

Answer

Plastic is a good electrical conductor

Answer

Plastic makes the wires easy to bend

Question 28

the tendency for a material to oppose the flow of electrons

Accepted Answer

resistance

Answer

current

Answer

circuit

Answer

difference

Question 29

What is resistance?

Accepted Answer

a measure of how difficult it is for electrons to flow

Answer

a measure of the difference in electrical potential between objects that have opposite charges

Answer

the continuous flow of electrons around a circuit

Answer

the fast sudden movement of electrons from a negative to a positive material

Question 30

This is the symbol for a _____?

Accepted Answer

switch

Answer

light

Answer

battery

Answer

wires

Question 31

What is a switch's function in a circuit?

Accepted Answer

turn on and off the flow of current

Answer

to make the current hotter or colder

Answer

the pathway that current flows

Answer

to add more power to the circuit

Question 32

What are the safe ways to work with electricity?

Accepted Answer

Turn off mains electricity before fixing exposed parts

Accepted Answer

Keep electrical appliances out of wet places

Accepted Answer

not overload an electrical outlet

Answer

use exposed cables and broken plugs

Answer

put your finger in a socket

Question 33

Electric current is measured in ______.

Accepted Answer

Amperes

Answer

Watts

Answer

Volts

Question 34

Will the light bulb light up if the switch remains open as shown?

Accepted Answer

No, because the electric circuit is not complete.

Answer

Yes, because the circuit will be complete.

Answer

Yes, because the battery will push the electric current.

Answer

No, because the battery will push the electric current.

Question 35

A moving charge is an electric

Accepted Answer

current

Answer

currant

Answer

curent

Answer

curant

Question 36

A device which impedes the flow of charge is called a

Accepted Answer

resistor

Answer

resistar

Answer

resister

Answer

resistur

Question 37

Lightning can provide a pretty impressive display in the sky. The movement of which particle results in this electrical discharge?

Accepted Answer

Electron

Answer

Proton

Answer

Neutron

Answer

Quark

Question 38

Will the bulbs light?

Accepted Answer

No

Answer

Yes

Question 39

Electrons can be found in shells which orbit the nucleus of an atom. What is their charge?

Accepted Answer

Negative

Answer

Positive

Answer

Neutral

Question 40

A balloon becomes charged when you rub it on a jumper because protons rub off the balloon, leaving it negatively charged.

Accepted Answer

False

Answer

True

Question 41

What does this electrical circuit symbol represent?

Accepted Answer

Switch

Answer

Battery

Answer

Cell

Answer

Bulb

Question 42

Increasing the number of bulbs in a series circuit will ...

Accepted Answer

Decrease the brightness of all the bulbs

Answer

Increase the brightness of all the bulbs

Answer

Decrease the brightness of some of the bulbs

Answer

Increase the brightness of some of the bulbs

Question 43

A series circuit is preferable for wiring Christmas tree lights because if one bulb breaks the rest will remain on.

Accepted Answer

False

Answer

True

Question 44

Parallel circuits allow components to be controlled independently by placing a switch on each branch beside each component.

Accepted Answer

True

Answer

False

Question 45

A series circuit has how many pathways for the electrons to flow?

Accepted Answer

One

Answer

Two

Answer

Many

Answer

Zero

Question 46

The total current through this circuit is

Accepted Answer

0.02 amps

Answer

0.09 amps

Answer

50 amps

Answer

9 amps

Question 47

As resistors are added in series to a circuit, the total resistance will...

Accepted Answer

increase

Answer

decrease

Answer

stay the same

Question 48

As the resistance of a circuit increases, the current will...

Accepted Answer

decrease

Answer

increase

Answer

stay the same

Question 49

In a parallel circuit which of the following is the same value throughout the circuit?

Accepted Answer

Voltage

Answer

Current

Answer

Resistance

Answer

Charge

Question 50

What is one problem with using a series circuit?

Accepted Answer

If one light goes down, they all go down!

Answer

It has a lot of series.

Answer

It doesn't work properly.

Answer

There are no problems.

Question 51

What is a benefit of using a parallel circuit?

Accepted Answer

If one light goes out, it does not affect the others.

Answer

It gets confusing.

Answer

There are no problems.

Answer

If one light goes out, they all go out.

Question 52

As more resistors are added in series to a constant voltage source, the power supplied by the source

Accepted Answer

decreases.

Answer

increases.

Answer

does not change.

Answer

increases for a time and then starts to decrease.

Question 53

Question 53.

Accepted Answer

Bulbs are in parallel - Circuit Y is brighter than Circuit X

Answer

Bulbs are in parallel - Circuit X is brighter than Circuit Y

Answer

Bulbs are in series - Circuit X is brighter than Circuit Y

Answer

Bulbs are in series - Circuit Y is brighter than Circuit X

Question 54

Question 54.

Accepted Answer

Circuit Y is brighter than circuit X

Answer

Circuit X is brighter than circuit Y

Answer

Both circuits have the same brightness

Answer

Neither circuit will light the bulbs

Question 55

Question 55.

Accepted Answer

the single lower bulb is brighter

Answer

all bulbs are lit equally

Answer

the two top bulbs are brighter

Answer

the single bulb does not light and the other two are dim

Question 56

Question 56.

Accepted Answer

A₂ + A₃ = A₁

Answer

A₂ = A₃

Answer

A₁ + A₂ = A₃

Answer

A₄ = A₂ - A₃

Question 57

Does this statement best describe a parallel or a series circuit.

When more light bulbs are added they all remain bright.

Accepted Answer

Parallel circuit

Answer

Series circuit

Question 58

What is the missing current?

Accepted Answer

Both 0.5A

Answer

Both 0.25A

Answer

0.2A and 0.3A

Answer

0.1A and 0.4A

Question 59

What is the missing current?

Accepted Answer

Both 1.5A

Answer

Both 4.0A

Answer

Both 3.0A

Answer

Both 6.0A

Question 60

What is the missing current?

Accepted Answer

Top: 4.0A
Middle: 2.0A

Answer

Top: 1.0A
Middle: 1.0A

Answer

Top: 1.0A
Middle: 2.0A

Answer

Top: 2.0 A
Middle: 2.0A

Question 61

What is the missing voltage?

Accepted Answer

Middle: 1.5V
Bottom: 1.5V

Answer

Middle: 1.5V
Bottom: 3.0V

Answer

Middle: 3.0V
Bottom: 3.0V

Answer

Middle: 0.75V
Bottom: 0.75V

Question 62

What is the missing voltage?

Accepted Answer

0.5V

Answer

1.0V

Answer

1.5V

Answer

2.0V

Question 63

What is the missing voltage?

Accepted Answer

2.5V

Answer

1.0V

Answer

1.5V

Answer

2.0V

Question 64

What is the missing voltage?

Accepted Answer

0.1V

Answer

0.3V

Answer

0.5V

Answer

0.7V

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