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` `kirchoffs law

6 years ago

Kirchhoff's Current Law

At every node, the sum of all currents entering a node must equal zero. What

this law means physically is that charge cannot accumulate in a node; what

goes in must come out.

Kirchhoff's Voltage Law (KVL)

The voltage law says that the sum of voltages around every closed loop in the circuit

must equal zero. A closed loop has the obvious definition: Starting at a node, trace

a path through the circuit that returns you to the origin node. KVL expresses the fact

that electric fields are conservative: The total work performed in moving a test charge

around a closed path is zero.

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Rahul- IIT Roorkee

6 years ago

Kirchhoff's voltage rule:-If several souces of emf and several resistors are connected in some complicated circuit with severl branches,then the currents will flow along several alternative paths.

can be applied to any loop in the complicated circuit.Kirchhoff's voltage ruleMainly the two Kirchoff's rules are

.1Kirchoff's current rule (or) Junction theorem

2.Kirchoff's Voltage rule

1.Kirchoff's current rule (or) Junction theorem:-

sum of the currents entering the Junction at any point is equal to sum of the currents leaving same junction.

(or)

The Algebraic sum of all currents at any Junction in the circuit is Zero

Equation:-

I+I1+I2+I3+I4+I5+............=0

2.Kirchoff's Voltage rule

sum of the emf source is equal to the sum of the potential difference across the resistor

(or)

The Algebraic sum of all the potential difference across all the elements in closed loop is Zero

Equation:-

V+V1+V2+V3+V4+V5+........=0

Thank you !!!!!!!!!!!

Wish you happy learning of Electricity.

6 years ago

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