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What causes common mode noise?
The difference in power between the hot and neutral wires of a power source and electrical equipment
The difference in power between the common and neutral wires of a power source and electrical equipment
The difference in power between the hot and ground wires of a power source and electrical equipment
The difference in power between the hot and common wires of a power source and electrical equipment
The correct response is the difference in power between the hot and ground wires of a power source and electrical equipment. Edit: at least in the United States, and at least in residential AC wiring, common, neutral and ground are all the same thing and ultimately connected to earth. People talk about grounding and connecting to common interchangeably.
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