ENERGY AND ELECTRICITY
- Created by: Pippa124
- Created on: 30-03-14 16:06
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- Energy and Electricity
- Energy Transfers
- Active energy
- Kinetic (movement)
- Sound
- Light
- Thermal (heat)
- Electrical
- Stored Energy
- Chemical
- Gravitational
- Strain (elastic)
- Energy transfer system:
- shows the energy being put into the system and the energy coming out of the system
- ENERGY IMPUT - PROCESS - ENERGY OUTPUT
- Eg: chemical energy - turning on a torch - electrical, thermal and light energy
- eg: electrical energy - lightbulb - thermal and light energy
- Active energy
- Energy is measure in Joules (J)
- Sanki Diagrams
- Shoes how much energy is going in, how much is useful and how much is wasted.
- The useful energy goes horizontal and the wasted energy goes downwards.
- All the energy imputed is shown on the left.
- eg:
- Power stations
- 1. the fuel is burned to boil water to make steam.
- 2. the steam makes a turbine spin.
- 3. the spinning turbine turns a generator which produces electricity.
- 4. the electricity goes tot the transformers to produce the correct voltage.
- 3. the spinning turbine turns a generator which produces electricity.
- 2. the steam makes a turbine spin.
- FUEL BURNED, STEAM MAKES TURBINE SPIN, TURNS GENERATOR, MAKES ELECTRICITY,
- The energy needed to boil the water comes from fossil or nuclear fuels. Renewable energy sources such as wind and wave power may drive the generators directly.
- 1. the fuel is burned to boil water to make steam.
- ENERGY (kWh) = POWER (kW) * TIME (h)
- Seris Circuit Parallel Circuit
- Current (I) - is the flow of charge. Measured using an ammeter
- Voltage (V) - is the difference in electrical energy between 2 points.
- Resistance (R) - is the resistance of current.
- RESISTANCE = VOLTAGE / CURRENT
- In a seris circuit the voltage splits between the bulbs. In parallel the voltage stays the same between the two bulbs.
- Resistance (R) - is the resistance of current.
- In a seris circuit the current remains the same. In parallel the current splits.
- Voltage (V) - is the difference in electrical energy between 2 points.
- SYMBOLS:
- Energy Transfers
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