An unknown transistor needs to be identified as a PNP or NPN type. A multimeter, with +ve and -ve terminals, is used to measure resistance between different terminals of the transistor. If terminal 2 is the base of the transistor, then which of the following is correct for a PNP transistor?

The correct option is D: +ve terminal 2, -ve terminal 3, resistance low.

For a PNP transistor, the emitter and collector junction is taken from the P terminal, and the base is taken from the N terminal. A multimeter can detect a short circuit (low resistance) and an open circuit (high resistance).

Low resistance is detected when the positive of the multimeter is connected at the P-junction (1 or 3) and the negative of the multimeter is connected at the N-terminal (2). Similarly, high resistance is detected when the positive of the multimeter is connected at the N-junction (2) and the negative of the multimeter is connected at the P-terminal (1 or 3).

Hence, D is the correct option.