Electricity

Question 1

Electrical current

Answer 1

Electric charge transferred per unit

Question 2

Direct current

Answer 2

Charges flow in one direction

Even though charges travel in one direction it doesn’t mean it has a constant voltage

Question 3

Alternating current

Answer 3

Charges move top and fro

Question 4

What do charged particles experience in an electric feild

Answer 4

Force

Question 5

Potential difference

Answer 5

Measure of the energy given to the charge carrier in a circuit

Question 6

Ohms law experiment

Answer 6

Connect an ammeter, voltmeter and a variable voltage supply together using connecting leads

Increase the voltage and see what happens to current

Plot a graph and determine resistance

Question 7

Transister

Answer 7

Electric switch in a curcuit

Question 8

Electrical power

Answer 8

Amount of energy transformed per unit time

Question 9

Reistance

Answer 9

measure of how hard it is for charges to flow through a component or wire.

Question 10

What fuse should be used for appliances over 720 W

Answer 10

13A

Question 11

What fuse should be used for appliances under 720 W

Answer 11

3A

Question 12

Conducter

Answer 12

Material in which charges can move eg iron

Question 13

Insulater

Answer 13

Material where charge carriers can move through eg glass

Question 14

Potential difference

Answer 14

The work done in moving 1c of charge from one point to another

Question 15

Series curcuit

Answer 15

One complete path of conductors
Current same at all points

Sum of components = voltage of supply

When another resister is added resistance increases

Question 16

Parallel curcuits

Answer 16

More than one path for conductors

Sum of current in parallel branches = voltage of supply

When another resister is added resistance decreases

Question 17

Wher does an ammeter go in a curcuit

Answer 17

Before the resistor

Question 18

Where does voltage go in a curcuit

Answer 18

Above the resister

Question 19

Where does an ohmmeter go in a curcuit

Answer 19

Takes place of cell

Question 20

Why can water conduct

Answer 20

Water is eltrically neutral

Contains both positive and negative ions

Question 21

Cell

Answer 21

Source of electrical energy

Question 22

Variable resistor

Answer 22

Increases and decreases current

Question 23

What happens to neutrons in an electric field

Answer 23

Neutron does not experience an electrical force in an electric feild

Question 24

Why does the ohms law graph start at the Origen

Answer 24

When switch is open reading on metre is 0

Question 25

Diode

Answer 25

Divivce that allows electrons to flow in 1 direction

Question 26

Capaitator

Answer 26

Prides energy quickly

Eg flash on camera

Question 27

Input devises

Answer 27

Put energy into electronic curcuits

Question 28

Output devises

Answer 28

Change energy out of electronic curcuits

Question 29

Trasistor

Answer 29

Very fast electronics which are used for automatic control of electronic curcuits

Question 30

Mosfets

Answer 30

Switcg on a set voltage