Question

State and explain kirchoff's laws for the distribution of current in a network.

Answer 1

HERE IS UR ANSWER

This law states that, for any node (junction) in an electrical circuit, the sum of currents flowing into that node is equal to the sum of currents flowing out of that node; or equivalently

Kirchhoff's rules for electrical networks are as follows:-

(i) Junction rule:At any junction, the sum of the currents entering the junction is equal to the sum of currents leaving the junction.

(ii) Loop rule: The algebraic sum of the changes in potential around any closed loop involving resistors and cells in the loop is zero.

Numerical : By Kirchoff's rule, begin mathsize 11px style straight I subscript 1 space plus space straight I subscript 2 space equals space straight I subscript 3 end style

Applying loop rule to both the lower and upper loops, we get begin mathsize 11px style 40 space straight I subscript 3 space plus space 20 space straight I subscript 1 space equals space 40 end style

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Answer 2

State Kirchhoff's rules of current distribution in an electrical network:-

Using these rules determine the value of the current in the electric circuit given below.

Junction rule:At any junction, the sum of the currents entering the junction is equal to the sum of currents leaving the junction.