Resistance is the opposition to current flow in a conductor, measured in Ohms. The symbol is **R**
A good conductor such as copper has a low resistance
A good insulator such as mica has a high resistance
Ohms law is named after *George Simon Ohm* who presented his laws back in 1827
In his honour the unit of electrical resistance was named the '**ohm**'
Ohms law relates **voltage**, **current** and **resistance**
Power is the rate that energy is used or dissipated, measured in Watts, the symbol is **P**
#### Use Ohms law to find a value - *cover ONE symbol in the triangle to solve the formula*

##### Volts (V), Amps (I) & Ohms (R)

##### Watts (P), Volts (V) & Amps (I)

##### Terms used with voltage, current and resistance

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