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Q.

Kirchhoff’s junction rule is a reflection of
I) conservation of current density vector
II) conservation of charge
III) 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
IV) the fact that there is no accumulation of charges at a junction

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a

I,II & III are only true

b

only IV is true

c

II & IV are only true

d

only I is true

answer is C.

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Detailed Solution

conservation of charge and no accumulation of charges at a junction

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Kirchhoff’s junction rule is a reflection ofI) conservation of current density vectorII) conservation of chargeIII) the fact that the momentum with which a charged particle approaches a junction is unchanged (as a vector) as the charged particle leaves the junctionIV) the fact that there is no accumulation of charges at a junction