Physics

Oersted’s idea about the Magnetic field The branch of physics that deals with the magnetic effect of current are called electromagnetism. In 1828, H. C.…

Potentiometer The instrument by which a small amount of potential difference and electromotive force can be measured by the potential drop method is called Potentiometer.…

Meter bridge: The instrument in which having uniform section of lm the resistance of a wire of uniform cross-section of lm length is used and…

Post Office Box: A post office box is a practical form of Wheatstone bridge. It is a testing device used to locate faults that may…

Lost volt: The potential difference between the two terminals of a cell decrease by an amount that does not contribute to the circuit, is called…

Joule’s Laws of Heat Joule heating describes the process where the energy of an electric current is converted into heat as it flows through a…

Experiment: To determine the unknown resistance by a Post Office Box Theory: By inserting appropriate resistance in the post office box current passing through the…

Experiment: To determine the specific resistance (resistivity) of a wire by meter bridge Theory: The amount of resistance or hindrance that a conductor having unit…

Experiment: Compare the electromotive forces of two electric cells by a Potentiometer Theory: When the circuit remains open, then the potential difference between the two…

Use of Shunt in Galvanometer The shunt is an electrical conductor joining two points of a circuit, through which more or less of a current…