**Kirchoff's Current Law:***Kirchoff's Current Law*states that 'the algebraic sum of the current meeting at any point in a circuit is zero'.

*For example:*

I3 = I1 + I2

or I1 + I2 - I3 = 0 (currents towards point designated as positive, those away from point negative).

Kirchoff's Current Law

In other words the sum of all currents entering a junction must equal the sum of those leaving it.

**Kirchoff's Voltage Law:***Kirchoff's Voltage Law*states that 'in travelling round any closed mesh (section) of a network (circuit) , the algebraic sum of the emfs (voltages) acting in the mesh is equal to the algebraic sum of the IR voltage drops for the individual resistance in the mesh.'

*For example:*

Working anticlockwise:

IR1 + IR2 = E1 - E2

Working clockwise:

-IR1 - IR2 = E2 - E1

Kirchoff's Voltage Law

In other words the sum of all voltage sources must equal the sum of all voltages dropped across resistances in the circuit, or part of circuit.