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Question:

What is the reason that the longer the wire pulls on the LED street lamp, the lower the voltage?

What is the reason that the longer the wire pulls on the LED street lamp, the lower the voltage?

Answer:

Wires have resistances. The longer the wires or wires, the smaller the resistance, the greater the resistance.
Resistance will block the passage of electricity; the greater the resistance, the greater the loss of electrical energy in the line.

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