OHM'S LAW

Wednesday 29 February


OHM'S Law:

• Ohms law is describes the relationship between Volts, Ohms and Amps. Since we can't see electricity the ohms law has been thought up by German physicist Georg Ohm.
• There three formulas.

• V = I x R						V
  I = V / R
  R = V / I				I				R

   

•  V = I x R - Volts = Current x Resistance, this equation is used to work out the over voltage being pushed through the circuit.

• I = V / R - I = Volts divide Resistance, "                                                            " the current through the circuit. The current is measured in amperes or amps for short.

• R=V / I - R = Voltage divide Current "                                                                " the Resistance between or through the circuit.

• there is also an equation to calculate power which is W = V x I - W/ Watts being the symbol for power.
• the best way to remember ohms law is buy the Ohms law triangle, I have inserted a picture just bellow:

I have also added a pic of one of the equations that the class was working together on today.

 

• Volts - the practical unit in electromagnetic force and potential difference's.

• Ampere - is the unit of current.

• Ohm - unit of resistance.

• Watt -  practical unit of power.

• Farad - is the of capacitance.

• Hertz - unit of frequency.

 The information provided on this page, some was found on Google, note taking in class & from the assessment book provided by unitec.