electricity

Question 1

What is the basis of electricity?

Answer 1

The movement of electrical charges

Question 2

Define Static Electricity

Answer 2

The imbalance and buildup of electric charges within an object

Question 3

Define Current Electricity

Answer 3

The flow of electric charges through a conductor

Question 4

What are conductors?

Answer 4

Materials that let electricity flow easily through them

Question 5

What are insulators?

Answer 5

Materials that resist the flow of electrons

Question 6

True or False: Conductors and insulators are two distinct categories.

Answer 6

False

Question 7

What is the Law of Electric Charges?

Answer 7

Opposite (unlike) charges attract, like charges repel

Question 8

What is grounding?

Answer 8

The spreading out of excess charges in an object into other objects it comes in contact with

Question 9

What triggers lightning?

Answer 9

A special case of grounding when enough charge builds up in the air

Question 10

Fill in the blank: Charging by _______ involves rubbing two different neutral materials together.

Answer 10

Friction

Question 11

Fill in the blank: Charging by _______ involves contact between a neutral object and a charged object.

Answer 11

Contact

Question 12

What is the Electrostatic Series used for?

Answer 12

To compare two materials when determining which will become positive/negative when rubbed together

Question 13

What is an electroscope?

Answer 13

A tool that allows you to detect the presence of electric charge

Question 14

What application of static electricity is used in photocopiers?

Answer 14

Static electricity is used to attract the ink to specific parts of the paper

Question 15

Define voltage.

Answer 15

The amount of energy each charge can get/has, measured in Volts (V)

Question 16

Define current.

Answer 16

The amount of charge that flows past a point in a circuit every second, measured in Amperes (A)

Question 17

Define resistance.

Answer 17

How much a material is able to slow down the flow of charges, measured in Ohms (𝛀)

Question 18

What are the essential components of an electric circuit?

Answer 18

Power source
Load
Conductors
Control device

Question 19

What is a simple circuit?

Answer 19

A circuit that uses 1 power supply, 1 load, and 1 control device

Question 20

What characterizes a short circuit?

Answer 20

A circuit with no load

Question 21

What is Direct Current (DC)?

Answer 21

An electrical current that travels in one direction

Question 22

What is Alternating Current (AC)?

Answer 22

An electrical current that changes the direction of the flow of electrons back and forth

Question 23

What is Ohm’s Law?

Answer 23

V = IR, relating voltage, current, and resistance

Question 24

In a series circuit, how is voltage across loads calculated?

Answer 24

Vt = V1 + V2 + Vn

Question 25

In a parallel circuit, how is voltage across loads characterized?

Answer 25

Voltage is equal across all loads

Question 26

What does power measure?

Answer 26

How quickly energy is being used, measured in Watts (W)

Question 27

What is the formula for calculating energy?

Answer 27

Energy = Power x time

Question 28

Define efficiency in the context of electrical devices.

Answer 28

The percentage of the input energy used for its intended purpose

Question 29

Fill in the blank: Electricity is billed based on _______.

Answer 29

kWh

Question 30

What is the purpose of the EnerGuide label?

Answer 30

Displays the annual energy consumption and compares it to efficient models

Question 31

What is Phantom Load?

Answer 31

The power used by an appliance even when it is turned off

Question 32

What factors affect resistance in a wire?

Answer 32

*Conductivity of the material* *Diameter of the wire* *Length of the wire* *Temperature*