Use the following formulae to work out your electrical problems. Money or marital problems you have to work out yourself!!
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Power = Watts |
Current = Amps |
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Watts = Volts2 / Ohms |
Amps = Volts / Ohms |
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Watts = Amps2 x Ohms |
Amps = Watts / Volts |
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Watts = Volts x Amps |
Amps = √Watts / Ohms |
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Emf* = Volts |
Resistance = Ohms (Ω) |
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Volts = √Watts x Ohms |
Ohms = Volts / Amps |
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Volts = Watts /Amps |
Ohms = Volts2 / Watts |
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Volts = Amps x Ohms |
Ohms = Watts / Amps2 |
Emf = Electro Motive Force (Volts)
√ = Square Root sign
Notes:
1) Current (Amps) flows like water down a pipe.
2) Voltage (Volts) is the difference in electrical potential between two points. It is the pressure pushing current.
3) Resistance (Ohms) (Ω) controls how much current flows. High resistance allows a small current, low resistance allows a high current. The definition of one Ohm is the resistance through which one Volt will maintain a current of one Amp.
4) Power (Watts) is current multiplied by voltage at a given point in a circuit.
5) A car with "12 Volt electrics" is actually running at about 13.2 to 13.5 Volts
Page last edited:- 03 October, 2006