2398233
Description
Mind Map by dana-howbridge, updated more than 1 year ago
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Created by dana-howbridge
over 9 years ago
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Physics - Electricity
- Charge
- When a charge is placed near a charged object, it will experiance a force.
- 1C=1As-1
- When a charge is placed near a charged object, it will experiance a force.
- Conductors
- Metals, carbon
- Metals, carbon
- Insulators
- Glass, plastic, wood
- Glass, plastic, wood
- current is the flow of electrons
- 1A= 1Cs-1
- 1A= 1Cs-1
- Voltage is the amount of
electrical energy given to
electrons by the battery
- 1V=1JC-1
- 1V=1JC-1
- Resistance is material opposes
current
- V=IR
- The higher the
resistance the smaller
the current
- Series circuit
- The current is the same at different positions
- Vs=V1+V2+V3
- Rt=R1+R2+R3
- The current is the same at different positions
- Parallel circuit
- I=I1+I2+I3
- The voltage across the resistors is the same
- 1/Rt=1/R1+1/R2+1/R3
- I=I1+I2+I3
- Changes energy into electrical energy
- Microphone
- Thermocouple
- Solar cell
- Thermistor
- LDR
- Microphone
- Changes electrical energy into different energy
- Loudspeaker
- Motor
- Lamp
- LED
- Loudspeaker
- A capacitor is a device which can store charge
- Transistors
- MOSFET
- Turns on at 2V
- Turns on at 2V
- NPN
- Turns on at 0.7 V
- Turns on at 0.7 V
- MOSFET
- Power is the
change of
energy over
time
- Mains supply is 230V
- P=E/T
- 1W=1J/S
- 1W=1J/S
- Mains supply is 230V
- AC is current that travels in
both directions
- 50HZ in Britain
- Current changes direction 50
times per second
- Current changes direction 50
times per second
- 50HZ in Britain
- Direct current is when current flows in one
direction
- R1/R2=V1/V2
- conduction is
heat transfer in
solids
- convection- liquids and gases
- Work done is when energy changes
into another form of energy
- Ew=Fxd
- Ew=Fxd
- Pessure is the force an object exerts over an
area
- P=F/a
- P=F/a
- P1/T1=P2/T2
- P1V1=P2V2
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