Question

Which one of the following logic elements describes a circuit with two normally open switches in series?

1) AND gate
2) OR gate
3) NAND gate
4) XOR gate

Answer 1

A circuit with two normally open switches in series corresponds to an AND gate, wherein current only flows when both switches are closed.

Step-by-step explanation:

A circuit with two normally open switches in series describes an AND gate. This is because for current to flow through the circuit, both switches must be closed simultaneously. If either switch is open, no current will flow, similar to how an AND gate requires both inputs to be true (1 or HIGH) for the output to be true. In contrast, an OR gate only requires one input to be true for the output to be true, a NAND gate outputs true unless both inputs are true, and an XOR gate outputs true only when the inputs are different.