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Question:

Is the electric water dispenser a pure resistance circuit?

Is the electric water dispenser a pure resistance circuit?

Answer:

Not all electric water heater is heated by tungsten wire, but also with electromagnetic and semi-conductor heating. Judging whether the resistor is a pure resistor or not, we should use an oscilloscope to test whether there is any lead or lag in the AC waveform, and that there is no pure resistance circuit.
In fact, any electrical appliances are not strictly pure resistance electrical appliances, as long as the current generation, will produce magnetic field current around the magnetic field with magnetic field change, is not a pure resistance wire line between the capacitor, capacitor can transfer alternating current, so the electric appliance is a relative concept with pure resistance
Yes, it's a tungsten filament heater with no inductive loads such as motors and transformers

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