A multimeter measures current in amperes and potential difference in volts. Wattmeters are used to measure watts and the reading is a combination of current being drawn and the voltage applied. watt = volts x amps
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Amperes measure the rate of flow of electricity in a conductor Volts measure electrical pressure Watts measure the amount of energy or work that can be done by Amperes and Volts Relationship: Work = Pressure x Flow or Watts = Volts x Amperes When you know two variables you can calculate the other Formulas - This formula referred to as the West Virginia Formula (W - VA)Watts = Volts x Amps Volts = Watts / Amps Amps - Watts / Volts Refer to link below for more information
Volts * Amps = Watts so since we don't know the voltage in the above equation: 1 volt * 50,000 Amps = 50,000 Watts OR 50,000 Volts * 1 Amp = 50,000 Watts Or 1,000 Volts * 50 Amps = 50,000 Watts Or The combinations are effectively infinite.
Milli amps is a measure of current whilst watt is a measure of power. The missing element is voltage as the formula is:- Power = Voltage * Amps ie power in Watts is the product of Volts (in Volts) times Amps (in Amps)
240 watts at 120 volts requires 2 amperes. Power = voltage * current
Volts time amps equals watts so watts divided by volts equal amps.