Question

Transistor circuits are sometimes referred to as switching circuits - Why is this?​

Answer 1

Step-by-step explanation:

One of the most common uses for transistors in an electronic circuit is as simple switches. In short, a transistor conducts current across the collector-emitter path only when a voltage is applied to the base. When no base voltage is present, the switch is off. When base voltage is present, the switch is on.