Kirchhoffs First Rule: Conservation Principle
Kirchhoffs first rule, also known as the junction rule or Kirchhoff's Current Law (KCL), applies to electric circuits at any junction (node) where multiple circuit elements connect.
- Junction Rule Statement: The algebraic sum of all electric currents entering a junction must equal the algebraic sum of currents leaving that junction. Mathematically, this is expressed as \(\sum I_{entering} = \sum I_{leaving}\).
- Basis of the Rule: This rule is fundamentally based on the principle of **conservation of charge**.
- Conservation of Charge: This physical law states that electric charge cannot be created or destroyed, only transferred. In an electric circuit, charge carriers (like electrons) flow continuously.
- Application at Junction: At a junction, charge cannot simply appear or disappear. The total amount of charge flowing into the junction per unit time must equal the total amount of charge flowing out per unit time. This directly corresponds to the conservation of current (flow rate of charge).
Therefore, Kirchhoffs first rule is based on the law of conservation of Charge.
The correct option is B.
Similar Questions
In the path given below, what is the voltage across R1 resistor?
Which among the following laws is shown in the given figure?
- According to Kirchoff's current law,:
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Important Questions from Kirchhoff's Laws
______ finds the voltage potentials at different nodes that provide a common connection for two or more circuit components in a circuit.
How many equations are necessary to solve a circuit with two principal nodes?
A 40 Ω resistor is in parallel with an 80 Ω resistor. Current in the 40 Ω resistor is 6 A. How will you add a third resistor and what will be its value if the line-current is to be 10 A?
Kirchoff's first law states that at a junction in an electric circuit -
Kirchhoff's current law is based on the conservation of
