# Electrical xircuits

- Created by: anxious_student123
- Created on: 20-09-21 18:53

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- Electrical charge and current
- Direct current
- Flow of electrons consistently in one direction
- electrons are negatively charged particles
- Transfer energy through wires as electricity

- electrons are negatively charged particles

- Flow of electrons consistently in one direction
- Alternating current
- direction of electron flow continually reverses

- Current
- Q=I(times)T
- How much charge has moved if a current of 13 A flows for 10 s?
- Q=13 (times) 10
- 130C

- Q=13 (times) 10

- How much charge has moved if a current of 13 A flows for 10 s?
- Current in a series circuit

- Q=I(times)T
- Potential difference
- a measure of how much energy is transferred between two points in a circuit
- to measure the potential difference a voltmeter must be placed in parallel
- also known as voltage (measured in volts
- potential difference=energy divided by change
- Potential difference= current (times) resistance
- V=I (times) R

- Resistance
- What is the potential difference if a current of 2A flows through a resistance of 40 ohms
- V=I(times)R
- V=2(times)40
- V=80V

- V=2(times)40

- V=I(times)R

- What is the potential difference if a current of 2A flows through a resistance of 40 ohms
- Series Circuit
- an electron will pass through every component on its way round a circuit
- if a bulb is broken the current can't flow through a circuit. If one bulb is out they all go out

- I1+I2=I3
- Potential difference in a series circuit
- the current transfers energy from the power supply to the components
- all the source energy is shared between components
- potential difference measures changes in energy

- the current transfers energy from the power supply to the components

- an electron will pass through every component on its way round a circuit
- Parallel Circuit
- electrical components are connected alongside one another forming extra loops
- Since there are multiple loops, the current will split as it leaves the cell
- If multiple ammeters are placed in different parts of the circuit it will show where the current splits

- I1=I2+I4=I3

- Since there are multiple loops, the current will split as it leaves the cell
- an electron will not pass through every component in a parallel circuit
- If one bulb is broken then the current will still be able to flow through the other loop of the parallel circuit

- electrical components are connected alongside one another forming extra loops

- Direct current

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