Kirchoff's first law states that the algebraic sum of currents at a junction of an electric circuit is zero. This note provides us an information on Kirchhoff's laws and wheatstone bridge.
A meter bridge is an electric device used for measuring an unknown resistance which works in the principle of the balanced condition of Wheatstone bridge. This note provides us an information on meter bridge p.o. box and potentiometer.
A potentiometer basically measures the potential difference between two points. This note provides us an information on application of potentiometer.