Column - I gives certain physical terms associated with flow of… | NEET 2021

Q21NEET 2021Medium

Electric Current, Drift Velocity & Current Density

Column - I gives certain physical terms associated with flow of current through a metallic

conductor. Column-II gives some mathematical relations involving electrical quantities. Match

column-I and column-II with appropriate relations.

Show answer and solution

Answer: (b)

(A) Drift velocity $v_d = \dfrac{eE}{m}\tau$ → (R)
(B) Resistivity $\rho = \dfrac{E}{J}$ → (S)
(C) Relaxation time from $\rho = \dfrac{m}{ne^{2}\tau}$ : $\tau = \dfrac{m}{ne^{2}\rho}$ → (P)
(D) Current density $J = nev_d$ → (Q)
So the answer is (b).

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