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Kirchhoff's junction rule is a reflectio...

Kirchhoff's junction rule is a reflection of

A

conservation of current density vector

B

conservation of charge

C

the fact that the 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.

Text Solution

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The correct Answer is:
B, D
The resistivity of a metallic conductor is given by,
`e=m/("ne"^(2) tau)`
where n is number of charge carriers per unit volume which can change with temperature T and `tau` is time interval between two successive collisions which decreases with the increases of temperature.
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