# electricity mindmap

- Created by: amberterri77
- Created on: 13-01-18 19:51

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- introduction to electrical current
- current,resistance and ohms law
- current is measured of rate of flow of electrical charge through a circuit. a larger current means faster flow
- current can change by increasing and decreasing the potential difference of the circuit.
- components can reduce the size of current called resistance.
- all elements in a circle include wires, resistance current
- resistance is measured of how hard it is for charge to flow round electrical current.

- all elements in a circle include wires, resistance current

- components can reduce the size of current called resistance.
- ohms law
- the connection between current was discovered by Georg ohm in 1827. (voltage/resistance)
- the formula V=I*R is known as ohms law. represented by the symbol
- ohms law is normally written potential difference= current*resistance or V=I*R
- resistance measured in ohms current is measured in amps and potential difference is measured in volts.

- ohms law is normally written potential difference= current*resistance or V=I*R

- experimenting with resistance
- resistance of wire depends on factors,material,thickness,length and temprature.
- if the length of the wire increases the resistance increases. if the thickness of the wire increases the resistance decreases
- in parrell circuits if the resistores are connected in parrell the total resistance of the circuit reduced.
- in series circuits if resistors are connected in series the total resistance of the circuit increases.
- equation to calculate resistance is R=V/I.

- in series circuits if resistors are connected in series the total resistance of the circuit increases.

- in parrell circuits if the resistores are connected in parrell the total resistance of the circuit reduced.

- if the length of the wire increases the resistance increases. if the thickness of the wire increases the resistance decreases

- resistance of wire depends on factors,material,thickness,length and temprature.

- current,resistance and ohms law

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