Electricity
- Created by: Jxss.lx
- Created on: 07-06-18 17:12
View mindmap
- Electricity
- Electric charge & Current
- Electric charge
- Measured in Coulombs (C)
- Q = It
- Charge = Current X time
- Electric current
- The flow of electric charge
- The greater the rate of flow, the greater the current
- Measures in Amperes/Amps (A)
- Using an a meter
- Stays the same throughout series circuit
- Splits in a parallel circuit
- The flow of electric charge
- Electric charge
- Resistors and Other Components
- Potential difference-current graphs (V-I graphs)
- Show the relationship between voltage and current
- Straight line through origin
- Voltage and current are directly proportional
- Resistance is constant
- Voltage and current are directly proportional
- Steep gradient
- Low resistance
- Large current and small voltage
- Low resistance
- Shallow gradient
- Large potential difference is needed for small current
- High resistance
- Large potential difference is needed for small current
- Non linear graph (not straight line)
- The value of R is not constant
- Resistance changes as current changes
- The value of R is not constant
- Resistors
- Ohmic conductor
- Current is directly proportional to potential difference
- At constant temp
- Resistance remains constant as current changes
- At constant temp
- Current is directly proportional to potential difference
- Ohmic conductor
- Filament lamps
- As current increase, temperature increases
- Diodes
- Current will only flow in one direction
- Very high resistance in opposite direction
- Shown by horizontal line along x-axis
- No current flows
- Current will only flow in one direction
- Thermistors
- Resistance decreases as temp increases
- Useful in circuits where temp control or response is needed
- Useful in thermostat circuits to switch off at certain temps
- Useful in circuits where temp control or response is needed
- Resistance decreases as temp increases
- Light Dependent Resistors
- Resistance decreases as light intensity increases
- Untitled
- Resistance decreases as light intensity increases
- Potential difference-current graphs (V-I graphs)
- Electric charge & Current
Comments
No comments have yet been made