Discussion

Match List I with List II.

Choose the most appropriate answer from the options given below :

Answer: A

The correct matching is (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i).

Ohm's law at a point relates current density to field: J = σE, (iv).
Kirchhoff's voltage law says the emfs round a loop equal the IR drops: ΣV = IΣR, (iii).
Kirchhoff's current law in point form, for steady currents, is ∇·J = 0: no charge accumulates, (ii).
Gauss's law at a point is ∇·D = ρ, (i).

The other options swap the two Kirchhoff laws or pair Ohm's law with Gauss's law.

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