Electricity

Question 1

Static Electricity

Answer 1

The electricity that builds up on the surface of an object caused by friction.

Question 2

Conductor

Answer 2

A material that allows electricity to pass through it (Usually metals).

Question 3

Insulator

Answer 3

A material that doesn’t allow the flow of electricity.

Question 4

Battery

Answer 4

Batteries and similar devices accept, store, and release electricity on demand.

Question 5

Circuit

Answer 5

A circuit is a closed loop that electrons can travel in.

Question 6

Ammeter

Answer 6

an instrument for measuring electric current in amperes.

Question 7

Voltmeter

Answer 7

an instrument for measuring electric potential in volts.

Question 8

Grounding

Answer 8

Grounding an object transfers electrons between the object and the earths surface, making the object neutral.

Question 9

Discharge

Answer 9

Electrical discharge occurs when electrical charges are transferred very quickly. (Sparks)

Question 10

Load

Answer 10

An electrical load is simply any component of a circuit that consumes power or energy.

Question 11

Electron

Answer 11

In the wires of electric circuits, an electron is the actual charge carrier. They have negative charges.

Question 12

Electron affinity

Answer 12

A material’s ability to hold on to electrons

Question 13

Friction

Answer 13

Two objects rubbing together cause friction

Question 14

Induction

Answer 14

The movement of electrons within a substance caused by the nearby charged object, without direct contact between the substance and object.

Question 15

Charging by contact

Answer 15

Occurs when electrons transfer from the charged object to the neutral object that it touches.

Question 16

Law of Attraction and Repulsion

Answer 16

Like charges repel and Opposites attract

Question 17

Electroscope

Answer 17

A device that detects static electricity by using thin metal

Question 18

Electrostatics

Answer 18

The study of static electric charges

Question 19

What are the necessary parts of a circuit

Answer 19

A energy source: battery
Conductor: Wires
Load: lightbulb
And switch (optional)

Question 20

Open Circuit

Answer 20

An electrical path having a break in; electrons don’t flow through

Question 21

Closed circuit

Answer 21

An unbroken path through which electrons are moving

Question 22

What is Electric current measured in?

Answer 22

Amperes

Question 23

What is resistance

Answer 23

The measure of how easily current can flow through a material (measured in ohms)

Question 24

Series Circuit

Answer 24

A circuit with only 1 path

Question 25

Parallel circuit

Answer 25

A circuit with many paths

Question 26

Resistors

Answer 26

Restrict the flow of electrons

Question 27

Potential Difference in Series Circuit

Answer 27

Shared between the loads

Question 28

Potential Difference in Parallel Circuits

Answer 28

Work done per unit charge

Question 29

Current in series circuit

Answer 29

The same throughout

Question 30

Current in Parallel Circuit

Answer 30

Shared between the paths

Question 31

Resistors in series circuits

Answer 31

Adding more loads reduces the current

Question 32

Resistors in Parallel Circuits

Answer 32

Adding more loads allows more current to flow through

Question 33

Potential Energy

Answer 33

The energy stored in an object

Question 34

Batteries flow in circuits

Answer 34

Electrons flow from the negative end to the positive end

Question 35

Potential Difference

Answer 35

The difference in electrical potential energy between two points

Question 36

The SI unit for measuring potential difference is

Answer 36

VOLT

Question 37

Electric current

Answer 37

The measure of the amount of electric charge that passes by a point in an electrical circuit each second.

Question 38

Two types of electric current

Answer 38

DC: Direct current AC: Alternating Current

Question 39

Direct current

Answer 39

Current that flows in one direction. The flow of a current from a bettery is DC

Question 40

Alternating current

Answer 40

Flows back and forth at regular intervals called cycles

Question 41

An Ampere

Answer 41

The measure of the amount of charge moving past a point in the circuit every second

Question 42

More resistance =

Answer 42

more energy gains

Question 43

Electrons entering the resistor is where the

Answer 43

Potential energy is greater

Question 44

More loads in parallel circuit=

Answer 44

will decrease the total resistance

Question 45

Total voltage in series circuit is

Answer 45

The sum of the voltages across each load

Question 46

Total current in a parallel circuit is

Answer 46

Equal to the sum of the individual branch currents. Each pathway shares the amount of current for the source.

Question 47

The voltage in a parallel circuit is

Answer 47

the same throughout.

Question 48

Ohms Law

Answer 48

Describes the relationship between Voltage, Resistance and current. V=LxR

Question 49

Current (I) =

Answer 49

V/R

Question 50

Resistance =

Answer 50

V/I

Question 51

If Current increases

Answer 51

Voltage must also (Vice Versa)

Question 52

Temp affects

Answer 52

Resistance

Question 53

Temp increases

Answer 53

Resistance increases, and conductivity decreases

Question 54

Temp decreases

Answer 54

Resistance decreases, and conductivity increases

Question 55

Short Circuit

Answer 55

An accidental low resistance connection between two points in a circuit. Current can flow easier through wires than lightbulbs, which creates a dangerous short circuit.

Question 56

Two devices in the home that act as defense to short circuits

Answer 56

Fuses and Circuit breakers

Question 57

What's a fuse?

Answer 57

A fuse is a safety device in an electrical circuit that has a metallic conductor with a low melting point compared to the circuit's wires. If the current gets too high, the metal melts, thus closing the circuit.

Question 58

Circuit Breaker

Answer 58

It does the same job as a fuse except the wire doesn't melt, it heats up and bends, which triggers a spring that turns off the flow of electricity. Unlike a fuse, this doesn't have to be replaced, it cools down and resets.

Question 59

Three Prong Electrical Plug

Answer 59

This is another safety feature. The third prong connects the device to the ground wire of the building in case of a short circuit.

Question 60

Ground Fault Circuit Interrupter (GFCI)

Answer 60

Detects a current in change and opens, stopping the flow. If smth gets wet while handling it and some current starts to flow through the water, the GFCI opens the circuit so that there is less injury to you.