Which of the following would indicate an NPN-type transistor is working properly when a DMM positive lead is connected to the base and the negative lead is switched between the Collector and the Emitter?

A) continuity between the Base and the Collector
B) continuity between the Base and the Emitter
C) no continuity between the Base and the Collector,continuity between the base and emitter
D) Both A and B

NPN-Type Transistor

A semiconductor device used to amplify or switch electronic signals, made from a layer of P-type material between two layers of N-type material.

DMM

Digital Multimeter, a test tool used to measure two or more electrical values—primarily voltage (volts), current (amps), and resistance (ohms).

Continuity

Used to describe the status of an electrical connection or circuit with little or no resistance to current flow. Checked by using an ohmmeter.