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.
| Column I | Column II |
| A | Drift Velocity | P | `` \frac{ m }{ ne ^{2} \rho} `` |
| B | Electrical Resistivity | Q | `` ne v_{ d } `` |
| C | Relaxation Period | R | `` \frac{ e E }{ m } \tau `` |
| D | Current Density | S | `` \frac{ E }{ J } `` |
(A)(A)-(R), (B)-(S), (C)-(P), (D)-(Q)
(B)(A)-(R), (B)-(S), (C)-(Q), (D)-(P)
(C)(A)-(R), (B)-(P), (C)-(S), (D)-(Q)
(D)(A)-(R), (B)-(Q), (C)-(S), (D)-(P)