# Physics

- Created by: Katie malone
- Created on: 15-04-13 19:37

View mindmap

- Physics
- Mechanics
- Speed=distance/time
- Average Speed=Total distance/total time

- Static Electricity
- When matrials are rubbed together, the material that loses electrons is positively charged
- The material that gains electrons is negatively charged!

- Charged atoms are called ions
- Charges are the same-
- Charges are opposite+
- One is charged and one is not-

- When matrials are rubbed together, the material that loses electrons is positively charged
- Current+voltage in circuits
- Electric current is the flow of electric charge
- Calculate the size+ flow of the current
- Current i=q/t i=amps(current) q=coulombs t=time

- potential difference v=w/q v=volts w=joules q=coulombs (charge)
- If volts are in opposite directions then current is 0V. If they are in the same direction then you add them together.
- Resistance R=IxV Volts= ampsXresistance (ohms)
- Power (W) =energy(J) / time (s) Power= Current (a)x volts

- Electricity
- Resistor= Directly proportional
- Diode= high resistance in one direction
- High temp-low resistance-more current flow
- Low temp-high resistance-less current flow

- Filament lamp = swerve
- Blue=left Green = right striped= top

- Mechanics

## Comments

No comments have yet been made