Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

Match List-I with List-II (Symbols have their usual meanings)

List-I Physical Quantity

List-II Expression

(A) Current density

(I) $\frac{-eEτ}{m}$

(B) Drift velocity

(II) $(ne^2τ)/m$

(C) Conductivity

(III) $eτ/m$

(D) Mobility

(IV) $nev_d$

Choose the correct answer from the options given below:

Options:

(A)-(IV), (B)-(I), (C)-(II), (D)-(III)

(A)-(I), (B)-(II), (C)-(III), (D)-(IV)

(A)-(II), (B)-(III), (C)-(IV), (D)-(I)

(A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Correct Answer:

(A)-(IV), (B)-(I), (C)-(II), (D)-(III)

Explanation:

The correct answer is Option (1) → (A)-(IV), (B)-(I), (C)-(II), (D)-(III)

List-I Physical Quantity

List-II Expression

(A) Current density

(IV) $nev_d$

(B) Drift velocity

(I) $\frac{-eEτ}{m}$

(C) Conductivity

(II) $(ne^2τ)/m$

(D) Mobility

(III) $eτ/m$