Kirchoff's junction rule is a reflection of

Options

A. conservation of current density vector
B. conservation of charge.
C. the fact that momentum with which a charged particle approaches a junction is unchanged (as a vector) as the charged particle leaves the junction.
D. the fact that there is no accumulation of charges at a junction.

Answer

B, D

Explanation

Kirchhoff.s junction law states that at a junction in an electric circuit, the total incoming current is equal to the total outgoing current and current is charge flowing per unit time. It means that the total incoming charge is equal to the total outgoing charge at a junction. Thus we can conclude that the Kirchhoff.s Junction law follows the charge conservation at a junction and is a reflection of conservation of charge . It also follows that there is no accumulation of charges at a junction as the incoming charge is equal to outgoing charge. Therefore, option (b) and (d) are correct.