How To Figure Out Amp Draw - Voltage (v) = current (i) x resistance (r) 2. Power (p) = voltage (v) x current (i) these formulas. Ready to crunch some numbers? Web i show how to test how many amps an electronic device pulls with a standard multimeter.
Ready to crunch some numbers? Power (p) = voltage (v) x current (i) these formulas. Voltage (v) = current (i) x resistance (r) 2. Web i show how to test how many amps an electronic device pulls with a standard multimeter.