Final answer:
It is true that AND gates are commonly used in combinational logic circuits due to ease of use and availability. However, it is false that voltage is the same along a wire in a circuit diagram, and false that high-voltage wires are insulated.
Step-by-step explanation:
It is true that AND gates are often used to wire combinational logic circuits because they are easy to use and readily available. An AND gate is a basic digital logic gate that implements logical conjunction - it behaves according to the truth table that defines the AND operation. In other words, the AND gate outputs a high (1) only if all its inputs are high (1).
Regarding the other statements, it is false that in a circuit diagram, we can assume the voltage is the same at every point in a given wire. Voltage can drop over distance and across components. Also, the statement about high-voltage wires being wrapped in an insulating material is false. High-voltage wires that you see connected to tall metal-frame towers are not typically wrapped in insulation because air acts as an insulator and wrapping the wires would add unnecessary weight and reduce heat dissipation.
Lastly, the integrated circuit helped to minimize the need for complicated wiring compared to the vacuum tube.