Answer :
Final answer:
High-voltage wires on metal-frame towers are not wrapped in insulating material; instead, they are bare and held up by insulating connectors. Insulation is not practical for these long-distance lines, and the air acts as the insulator.
Explanation:
The statement that high-voltage wires are held aloft by insulating connectors and wrapped in an insulating material is false. In reality, high-voltage power lines, such as those connected to tall metal-frame towers, are not insulated. The wires are indeed held up by insulating connectors, which are known as insulators, but the wires themselves are typically bare.
The air around the wires acts as the insulation, as the high elevation of the lines reduces the risk of accidental contact with people and objects on the ground. Moreover, wrapping the wires in insulation would be impractical due to the immense length of these power lines and the challenges it would pose for heat dissipation.
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