Presentation is loading. Please wait.

Presentation is loading. Please wait.

Contact Points and Light Bulbs Physics First Unit 1 Electricity.

Similar presentations


Presentation on theme: "Contact Points and Light Bulbs Physics First Unit 1 Electricity."— Presentation transcript:

1 Contact Points and Light Bulbs Physics First Unit 1 Electricity

2 Contact Points  All electrical points have contact points  Contact points- allow electrical current to flow  Inside the device there is a pathway (without breaks) so current can flow

3 Contact Points  All devices must have at least 2 contact points (some have more)  One point allows current to flow in while the other allows current to flow out  Contact points must be separated by some insulator

4 Anatomy of a Light Bulb  3. filament wire- current passes through and creates heat which turns to light  4 and 5- contact wires that connect to filament  9 and 11- outside contact points insulated by 10  8- wire connected to inside contacts

5 Anatomy of a Light Bulb  1. Glass bulb- protector  2. Inside gas- does not allow the filament to burn out  6. Support wires- no electrical purpose  7. Stem- glass mount

6 Symbols  Resistor- (light bulb, motor, buzzer) device that a current can cross

7 Symbols  Wire  Battery

8 Symbols  When a switch is opened or closed we must show it in our circuit diagrams

9


Download ppt "Contact Points and Light Bulbs Physics First Unit 1 Electricity."

Similar presentations


Ads by Google