Which of the following electrical circuit configurations correctly represents the operation of a two-input OR gate? (Assume a closed switch represents logic 1 and an open switch represents logic 0. For the output bulb, glowing represents logic 1 and not glowing represents logic 0).

Step-by-step solution

An OR gate produces a high output (logic 1) if at least one of its inputs is high (logic 1). It produces a low output (logic 0) only when all inputs are low (logic 0). In an electrical circuit analog, logic 1 for an input means the switch is closed, and logic 1 for the output means the bulb glows. To achieve the OR logic, the circuit must allow current to flow through the bulb when either switch A or switch B is closed. This is accomplished by connecting switches A and B in parallel with each other. To ensure the b