Current Electricity

Question 1

Current electricity

Answer 1

The continues flow of electrons in a circuit

Question 2

Circuit

Answer 2

Pathway for electrons to flow

Question 3

Battery

Answer 3

Converts chemicals that conducts electricity
INCLUDES THREE PARTS
-ELECTROLYTE: paste that conducts electricity
-ELECTRODES: a metal strip that reacts with the electrolytes
-TERMINAL: the end points (electrodes) in a battery where we make connections

Question 4

Components of a simple circuit

Answer 4

Switch (controls movement of electrons in a circuit)
Closed (electrons can move)
Open (electrons cannot move)
Load (converts electrical energy to some other form of energy e.g lightbulb, music player)
Conducting wire (pathway for electrons to travel)
Source of energy (electrons flow from the negative to the positive terminal e.g battery)

Question 5

Resistance

Answer 5

Degree in which a substance opposes the flow of electrons & converts electrical energy to other forms of energy e.g heat and light
-measured in ohms Ω using an ohmmeter

Question 6

Resistor

Answer 6

material that slows current flow in a circuit meanwhile converting energy into another form

Question 7

V (potential difference)

Answer 7

difference in electric charge
volts (v)
voltmeter

Question 8

I (current)

Answer 8

flow of electrons
Units: Amperes (A)
Measured Device: Ammeter

Question 9

R (resistance)

Answer 9

Oppose electron flow
Units: ohms Ω
Measured device: ohmmeter

Question 10

ammeter

Answer 10

is a device that measures currents

Question 11

Voltmeter:

Answer 11

measures the voltage or potential between two points of an electron.

Question 12

Some factors of resistance are

Answer 12

temperature, length, area of cross-section, and the material used.
when a wire is heated, the resistance increases.

Question 13

Series Circuits:

Answer 13

an electric circuit with only one path to follow

Question 14

Parallel Circuits:

Answer 14

an electric circuit that has more then one path to follow.

Question 15

Voltage

Answer 15

The pressure from a power source that pushes electrons thought a circuit.
measured in units called volts using voltmeter

Question 16

Current in Circuit

Answer 16

Electric current refers to the flow of electricity in an electronic circuit, and to the amount of electricity flowing through a circuit

Question 17

Fuse

Answer 17

if the current gets to high, the current flow will melt and the current flow will stop.

Question 18

Circuit Breaker

Answer 18

the wire bends under high temperature to stop the flow. once cooled it can reset.

Question 19

three prong bar

Answer 19

3rd prong connects to a device to the ground wire of the building. it directs excess current to the ground instead of shocking person using it.

Question 20

ttyy ground fault

Answer 20

detests a change in current and open the circuit to stop the current flow.

Question 21

short circuit

Answer 21

an accidental low-resistance connection between two points in a circuit.

Question 22

Smartmeters

Answer 22

digital electrical meter that are able to measure how much electricity they use and would be.

Question 23

Energuide

Answer 23

Label indicating how much energy will use in a year.

Question 24

energy star

Answer 24

sticker put on appliances to indicates the appliance is one of the most efficient in its class