Final answer:
The statements about high-voltage wires and circuit diagrams are false under typical circumstances, while the statements about tension in a connector and inducing an electric current when a magnet falls through a copper tube are true.
Step-by-step explanation:
The question posed pertains to various concepts in physics, including electrical circuits, magnetism, and tension in connectors. Without the context of a specific diagram or scenario, the question about the cord being attached to the pin at 'c' cannot be decisively answered as true or false. However, I can provide information on the statements:
- The statement about high-voltage wires is false. High-voltage wires are not wrapped in an insulating material; they are typically bare and held aloft by insulators to prevent current from flowing to the towers or poles supporting them.
- In a circuit diagram, the voltage being the same at every point in a given wire is false if the wire is part of a series circuit with components that cause voltage drops. However, in an ideal wire with no resistance elsewhere in a circuit, this could be considered true.
- Tension being the result of opposite forces in a connector pulling apart each point of the connector is true. This describes the common definition of tension within physics.
- If you drop a bar magnet through a copper tube, it does indeed induce an electric current in the tube due to the relative motion between the magnet and the conductive material. This statement is true.