Basics of Charge , Voltage , Field

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Match List- I with List - II & select the correct answer using CODE given below the lists

List-I
A.Drift current
B.Einstein's equation
C.Diffusion current
D.Continuity equation

List - II
1.Law of conservation of charge
2.Electric field
3.Thermal Voltage
4.Concentration gradient

CODE:
     A      B     C     D
(a)  4      3     2      1
(b)  2      1     4      3
(c)  4      1     2      3
(d)  1      3     4      2

Answer is ( )

Concept

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