Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
You can change this under Settings & Account at any time.
IGCSE Physics revision
Transcript of IGCSE Physics revision
Both energy providers
Emf= Energy (J)/Charge (C) + - Series, measures in Amps V Parallel, measures in volts R=I
_ V Ohms law I V Directly proportional ( 0,0 ) More on resistance R L Factors affecting resistance Length of wire
Thickness of wire
Type Electrical power P=E _ t E=vit Unit J.s -1 Or w ETC. Series circuits Rules- Current is the same everywhere R total= R1+R2 Total p.d is shared between the components Parallel curcuits Rules- Current in each branch adds up to the current in the main branch 1/rt=1/r1+1/r2 p.d is the same everywhere Sensor circuits How does the resistance change and therefore change the output voltage Potentiometer Switching circuits Relay + Transistor Example-
Temp of fan I
Thermistor + Transistor Rectifier circuits Time delay On/off, 1,0, Yes/No Analogue continuous Gates Truth tables Logic circuits in control Control system Input Control Output Examples- High temp indicator Night time alarm Electrical safety High and low V circuits Mains electricity Fuses and circuit breakers Earthing