Concepts Of Physics MCQ Edition [Volume 2]PhysicsSemiconductors and Semiconductor Devices

During the normal operation of a transistor,

Options

Athe base-emitter junction is forward-biased
Bthe base-emitter junction is reverse-biased
Cthe base-collector junction is reverse-biased
Dthe base-collector junction is forward-biased

Correct answer

C. the base-collector junction is reverse-biased

Step-by-step solution

For the normal operation of a transistor as an amplifier, it must operate in the active region. In the active region, the base-emitter junction is always forward-biased to allow charge carriers to be injected into the base. The base-collector junction is reverse-biased to collect the injected charge carriers efficiently. Thus, the base-emitter junction is forward-biased and the base-collector junction is reverse-biased.

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