Kirchoff’s Current Law

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Presentation transcript:

Kirchoff’s Current Law The current arriving at any junction point in a circuit is equal to the current leaving that junction. can be related to conservation of charge.

Kirchoff’s Current Law cont’d Consider a function formed by 6 conductors. The current in these conductors are i1, i2,i3,i4.i5,i6.Some of these currents are flowing towards and other’s away from A. According to Kirchoff’s current Law i1+i4+i5+i6 = i2+i3 (Flowing towards) (Flowing away from A)

Kirchhoff’s Voltage Law The voltage law gives the relationship between the "voltage drops" around any closed loop in a circuit, and the voltage sources in that loop. The total of these two quantities is always equal. can be related to conservation of energy.

Kirchhoff’s voltage law can be applied only to closed loops Kirchhoff’s voltage law can be applied only to closed loops. A closed loop must meet two conditions: 1. It must have one or more voltage sources. 2. It must have a complete path for current flow from any point, around the loop, and back to that point

Closed loop

Voltage divider rule Voltage divider rule states that the voltage across the resistor in a series circuit is equal to the value of that resistor times total impressed voltage across the series elements divided by the total resistance of the series elements.

Circuit Numericals

Current division rule In parallel circuit voltage is constant (i.e. Voltage is same everywhere in the circuit) but the current is divided. The current division rule is used to calculate the current in parallel network.