Question

The current flows from the collector (C) to the Emitter (E) in

• A. npn transistor
• B. pnp transistor
• C. both
• D. none

Answer 1

The correct option is A npn transistor

An npn transistor turns on when the current flows through the base of the transistor. In this type of transistor, the current flows from the collector (C) to the emitter (E).

A pnp transistor turns ON, when there is no current at the base of the transistor. In this transistor, the current flows from the emitter (E) to the collector (C).

Thus, knowing this, a pnp transistor turns ON by a low signal (ground), where npn transistor turns ON by a high signal (current).