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Physics Question on Semiconductor electronics: materials, devices and simple circuits

A n-p-n transistor conducts when

A

both collector and emitter are positive with respect to the base

B

collector is positive and emitter is negative with respect to the base

C

collector is positive and emitter is at same potential as the base

D

both collector and emitter are negative with respect to the base

Answer

collector is positive and emitter is negative with respect to the base

Explanation

Solution

An n-p-n transistor conducts when the collector is positive and the emitter is negative with respect to the base.
In an n-p-n transistor, the base-emitter junction is forward-biased (positive on the emitter and negative on the base), and the collector-base junction is reverse-biased (positive on the collector and negative on the base). This biasing arrangement allows the transistor to conduct.

So, the correct option is (B): collector is positive and emitter is negative with respect to the base