electricity

1. components

1.1. bulb

1.1.1. light source

1.1.2. component

1.1.2.1. metal casing

1.1.2.2. metal tip

1.1.2.3. glass bulb

1.2. switch

1.2.1. controls the current to flow throught

1.3. battery

1.3.1. release current

1.4. wire

1.4.1. allow current to flow throught

2. parallel circuit

2.1. if one bulb fuse the other bulb will not fuse

3. serise

3.1. if one bulb fuse the other bulb will fuse

4. safty

4.1. do not touch socket with with wet hand

4.2. do not poke socket with screw driver