Question

define kirchhoff law

Answer 1

Kirchhoff's Voltage Law States That The Algebraic Sum Of The Voltages Across Any Set Of Branches In A Closed Loop Is Zero. Kirchhoff's Voltage Law Is A Result Of The Electrostatic Field Being Conservative.

Generally, We Can Say That The Law Defines How Current Is Distributed In An Electronic Circuit....✌️❣️

Answer 2

Fig. 1 First & Fig. 2 . second

$\mathcal{\huge{\underline{\underline{\pink{Kirchhoff\:Law:-}}}}}$

First :-

• The algebraic sum of current meeting at an junction in a circuit is zero. In this law, the current flowing towards the junction are considered as +ve and those flowing away from the junction as −ve currents.

As shown in the figure, we have

i1 −i2 −i3+i4 −i5=0

i1 −i2 −i3+i4 −i5=0or i1 +i4=i2+i3+i5

Second :-

• In any closed mesh (or loop) of an electrical circuit, be algebraic sum of the product of the currents and resistances is equal to the total e.m.f. of the mesh.

If we go along the direction of conventional current, be potential difference will be taken as negative and opposite to it will be positive.

Inside the cell, if we move from low to high potential along the direction of conventional current the e.m.f. will be positive.

For loop 1,

E2−i2R2−(i1+i2)R3= 0

or E2 =i2R2 +(i1 +i2)R3

For loop 2, i2R2−E2 −i1R1+E1 =0

or E1−E2 =i1 R 1 −i2 R2

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