What is the difference between 1 amp at 120 volts and 10 amps at 12 volts?
The primary difference between 1A at 120V & 10A at 12V is their power output and application, considering the fact that both provide the same total watts.
Calculation
Power (W) = Voltage (V) × Current (A)
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1A @ 120V - 120W
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10A @ 12V - 120W
Both provide the same total power (120W), yet at the different voltages & current levels.
Different Voltage Levels: The 1A at 120V arrangement requires a greater voltage, which might be more harmful if not handled correctly.