Question

Conductors for use in a Class 2 circuit shall be of copper.
A. True
B. False

Answer 1

Conductors for use in Class 2 circuits are typically made of copper due to its excellent conductivity and flexibility; the statement about high-voltage wires being insulated is false, dropping a bar magnet through a copper tube inducing electric current is true, and assuming voltage is the same everywhere in a circuit diagram is false.

Step-by-step explanation:

The statement that conductors for use in a Class 2 circuit shall be of copper is typically true. Copper is one of the best electrical conductors due to its high conductivity, flexibility, and ductility. This is why copper is commonly used in various appliances and electronic devices. However, other conductors could also be used depending on the specific requirements of the electrical code or standards in different regions.

Now addressing the provided true/false statements:

1. The high-voltage wires that are connected to tall metal-frame towers are indeed held aloft by insulating connectors, but these wires are not typically wrapped in an insulating material; they are often bare. Therefore, the statement is false.
2. If you drop a bar magnet through a copper tube, it indeed induces an electric current in the tube as it falls. This is an example of electromagnetic induction, so the statement is true.
3. In a circuit diagram, it is false to assume that the voltage is the same at every point in a given wire, because different components have different resistances which affect the voltage at different points in the circuit.