JEE · NEET Previous Year Question
A working transistor with its three legs marked P, Q and R is tested using a mustimeter. No conduction is found between P and Q. By connecting the common (negative) terminal of the mustimeter to R and the other (positive) terminal to P or Q, some resistance is seen on the mustimeter. Which of following is true for the transistor?
Topic: JEE PYQ
Answer: D. Full step-by-step solution below.
- AIt is a pnp transistor with R as collector
- BIt is a pnp transistor with R as emitter
- CIt is an npn transistor with R as collector
- DIt is an npn transistor with R as base
Correct answer: D
Solution
(d) Since no conduction is found when the multimeter is connected across P and Q it means either both P and Q are n -type or p -type. So, it means is base. When is connected to the common terminal and conduction is seen when another terminal is connected to and , so it means transistor is in configuration with R as the base.More Semiconductor Devices PYQs
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