JEE Main · 2022 · 28 Jun 2022 · Shift 1 · Semiconductors

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Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: n-p-n transistor permits more current than a p-n-p transistor.
Reason R: Electrons have greater mobility as a charge carrier.
Choose the correct answer from the options given below:
  1. (A)Both A and R true, and R is correct explanation of A.✓ Correct
  2. (B)Both A and R are true but R is NOT the correct explanation of A.
  3. (C)A is true but R is false.
  4. (D)A is false but R is true.

Answer: (A)

Solution

Both the assertion and reason are true. n-p-n transistors do permit more current than p-n-p transistors because electrons (the majority carriers in n-p-n) have higher mobility than holes (the majority carriers in p-n-p). The reason correctly explains the assertion. The answer is (A).

JEE Main · 2022 · 28 Jun 2022 · Shift 1 · Single correct option

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