6.21.F - Test: Module Six

Question 1

Electricity is a form of energy involving the flow of ____________.
neutrons
protons
quarks
electrons

Answer 1

electrons

Question 2

Why doesn’t the wire get hot in a circuit going from a battery through a light bulb?
the amps are too low
the light bulb is not switched on
the light bulb reduces the current
there are not enough volts

Answer 2

the light bulb reduces the current

Question 3

How much current is flowing through the typical flashlight?
1 amp
2 volts
5 amps
10 volts

Answer 3

1 amp

Question 4

What is the relationship between current and voltage across a circuit?
inversely proportional
no relationship
joint variation
directly proportional

Answer 4

directly proportional

Question 5

If a 9-volt battery produces a current of 25 amps, what is the resistance?
3.6 ohms
2.7 ohms
0.27 ohms
0.36 ohms

Answer 5

0.36 ohms

Question 6

What voltage produces a current of 500 amps with a resistance of 60 ohms?
60,000 volts
6,000 volts
3,000 volts
30,000 volts

Answer 6

30,000 volts

Question 7

If a 12-volt battery produces a current of 20 amps, what is the resistance?
6 ohms
1.67 ohms
.06 ohms
0.6 ohms

Answer 7

0.6 ohms

Question 8

What is the current produced by a 9-volt battery through a circuit with a resistance of 100 ohms?
0.09 amps
0.009 amps
0.9 amps
9 amps

Answer 8

0.09 amps

Question 9

In one to three sentences, explain the difference between static electricity and current electricity.

Answer 9

Your Answer:
Static electricity involves friction and is like rubbing a balloon on your hair. The charges are found on two surface areas, and current electricity consists of a battery or a generator, and the charges are found in the current of the conductor.

Question 10

The symbol for current in Ohm’s Law is ________.
R
I
V
C

Answer 10

I

Question 11

In a series circuit, when you add more resistance, what will happen to the amount of current?
increase
triple
decrease
double

Answer 11

decrease

Question 12

Match the following statements based on the information about Christmas tree light circuits.
A string of older Christmas tree lights is an example of a _________ circuit because when one light goes out, they all do..
series
parallel

Answer 12

series

Question 13

Match the following statements based on the information about Christmas tree light circuits.

A string of newer Christmas tree lights is an example of a _________ circuit because when one light goes out, it doesn’t affect them all.
series
parallel

Answer 13

parallel

Question 14

What do we call this formula?
Volta’s Law
Ampere’s Law
Newton’s 2nd Law
Ohm’s Law

Answer 14

Ohm’s Law

Question 15

What is a common example of charging by friction?
bringing a charged object in contact with an uncharged conductor
bringing an object close to a charged object
rubbing a balloon against your hair

Answer 15

rubbing a balloon against your hair

Question 16

In static electricity, one object loses _________ and another gains them.

Answer 16

electrons

Question 17

Which kind of natural disaster claims more lives in the United States on an average year?
forest fires
floods
lightning
mudslides

Answer 17

lightning

Question 18

In which state do the most lightning strikes occur?
Virginia
Oklahoma
Kansas
Alabama
Alaska
Florida

Answer 18

Florida

Question 19

___________ are the works of the Lord; they are
____________ by all who delight in them.”

  Psalm 111:2

Answer 19

Great
Pondered

Question 20

Both cotton and wool are good insulators, so transfers of electrons only happen where they _________ each other.
touch
double
consume
dissolves

Answer 20

touch

Question 21

Maxwell gave Faraday’s theories a firm ____________ foundation leading to advances in electricity and magnetism.
Biblical
Scientific
Philosophical
Mathematical

Answer 21

Mathematical

Question 22

_______ is the force that makes electricity flow in an electrical circuit, holds elections in an atom, and makes lightning.
Electron Force
Electromagnetic Force
Electrical Force
Friction Force

Answer 22

Electromagnetic Force

Question 23

What do we call atoms when they become charged by gaining or losing electrons?
cations
ions
bonded
anions

Answer 23

ions

Question 24

Who was the first to demonstrate that lightning is an electrical discharge?
Franklin
Volta
Newton
Faraday
Ampere

Answer 24

Franklin

Question 25

Both cotton and wool are good insulators, so transfers of electrons only happen where they _________ each other.
double
touch
consume
dissolve

Answer 25

touch

Question 26

What are the two elements used most often to make semiconductors?
silicon
arsenic
silver
boron
germanium
glass
aluminum

Answer 26

silicon

germanium

Question 27

Select the four materials that are the best insulators:
Glass
Aluminum
Porcelain
Wool
Rubber
Copper

Answer 27

Glass
Porcelain
Wool
Rubber

Question 28

Who was the first one to construct and demonstrate an electric motor in 1821?
Stephen Faraday
Michael Faraday
Michael Ampere
Stephen Ampere

Answer 28

Michael Faraday

Question 29

What trick or rule helps you understand the force and direction of movement within the motor itself?
right hand rule
left arm rule
left hand rule
right leg rule

Answer 29

right hand rule