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. [NEET 2021]
Column I | Column II | ||
A. | Drift velocity | I. | |
B. | Electrical resistivity | II. | |
C. | Relaxation period | III. | |
D. | Current density | IV. |
Codes
Text Solution
Verified by ExpertsA
As we know that, the expression of the drift velocity,
Here, e is the electric charge,
E is the electric field,
m is the mass of an electron,
is the relaxation time.
Consider the conductor having length l, area of the cross-section A and the charge density n.
Electrical resistivity, 
Relaxation period, 
Current density, 
Again, 
Electrical resistivity, 
The correct match is A-III, B-IV, C-I, D-II.
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