|GCSE Measure Current Frequency Meter Logic Probe Multimeter Oscilloscope >Power< Voltmeter|
Power = Volts x Amps = V2 / R = I2 R
The easiest way to measure power is to
If you know the resistance and one or other of the voltage or current you can use these formulas: Power = V2 / R = I2 R
Beware: Make sure the voltage, current or resistance values are the ones that apply to the component or sub-system where you need the power.
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