What is meant by Transfer of ChargeTransfer of ChargeElectric charge can be transferred from a charged object to another through a metal conductor. A device working on this principle is the electroscope, which is used to detect and measure electric charg…

Relationship between Energy Transferred, Current, Voltage and TimeThe potential difference or voltage, V across two points is defined as the energy, E dissipated or transferred by a coulomb of charge, Q that moves through the two points. Therefore, pote…

Radioactivity: Types of Radioactive EmissionsWhat is radioactivity in physics?Radioactivity:You may have heard of this statement “Danger : Radiation Kills”. Do you know that radiation can kill for a good purpose? The syringe and needle used by a doctor …

What is the Working Principle of AC GeneratorAC Generator Construction of an ac generator : It consists of a rectangular coil of insulated copper wire. This coil is placed in a magnetic field between the poles of a strong permanent horseshoe magnet. Thi…

What is the Working Principle of DC GeneratorWhat is DC generator Working Principle of DC generator: A DC generator stands for direct current electric generator. A DC generator produces direct current. A DC generator is also called DC dynamo. A simple D…

What is the Principle of DC Motor1. Principle : It works on the principle of motion of a current carrying conductor in a magnetic field, according to Fleming’s Left Hand Rule. It is a device which converts electrical energy into mechanical energy of rota…

What is alternating current and direct current?A direct current flows in one direction only in a circuit.The magnitude Of a direct current may be (a) constant (b) changes with timeFigure shows the graph of current against time for some direct currents. A…

What is the definition of resistance in physics?What is Resistance of a Conductor The movement of electron gives rise to the flow of current through metals. The moving electrons collide with each other as well as with the positive ions present in the met…

What is Electric CurrentElectric Charge and Electric CurrentWhat is an electric charge? Objects that exert electric forces are said to have electric charges. Electric charge is the source of electrical force.There are two types of electrical charges, pos…

What do you mean by rectification?Diode as a Rectifier:A rectifier is a device that converts alternating current to direct current.It consists of one or more semiconductor devices or vacuum tubes.Diodes are widely used as a rectifier.Rectification is a …