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The expression mc031-1.jpggives the thickness in millimeters (mm) of the insulation needed for a high voltage cable. mc031-2.jpg is the number of kilovolts carried by the cable. What thickness of insulation material is needed for 7 kilovolt cable?

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MissPhiladelphia

Electric current is the movement of the electrons caused by potential
difference. For example, in a circuit, the electrons in the bulb will not move
without the potential difference or voltage. When there is voltage, electric
current occurs because there is a driving force for the electrons in the wire
to move.

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