Electricity & Megnetism
-
What is Difference between Galvanometer and ammeter?
Galvanometer and ammeter are both current measuring devices. The basic difference between galvanometer and ammeter is that The galvanometer is used to measure very small current while ammeter is used to measure very large current up to 10 A. Now!…
-
Hall effect and its applications in semiconductors
“An effect when occurring when a current-carrying conductor is placed in a magnetic field and orientated so that the field is at right angles to the direction of the current.”This is the Hall effect, named after E. H. Hall who…
-
Difference between potentiometer and voltmeter in tabular form
The voltmeter is used to find the potential difference,it has high and finite resistance. While potentiometer has high and infinite resistance. More differences between potentiometer and voltmeter are given in the comparison table below. Potentiometer Vs Voltmeter Voltmeter Potentiometer Its…
-
Different Types of Capacitors and Their images & Symbols
“A capacitor is a device that can store charge.”Apart from resistors and inductors, it is the other basic component commonly used in electronic circuits. It is a device that has the ability to store charge which neither a resistor nor…
-
Types of Electromagnetic Waves And Their Uses
Electromagnetic waves require no medium for transmission and rapidly propagate through the vacuum. Radio waves, microwaves, X-rays, Gamma rays, infrared waves, ultraviolet waves, visible light rays, etc, are the types of electromagnetic waves. History In 1864 British physicist James Clark…
-
Coulomb’s law formula with examples and problems
What is Coulomb’s law? “Coulomb’s law states that force of attraction or repulsion between two electric charges is directly proportional to their magnitudes and inversely proportional to the square of the distance between them”.Coulomb’s law examples are given below. Charles…
-
What are the Different types of electric motor?
An electric motor is an electromechanical device that converts electrical energy into mechanical energy. Basically, there are three types of electric motor, AC motors ( Synchronous and Asynchronous motors), DC motors ( brushed and brushless ), and Special purpose motors.…
-
Resistance in series and parallel circuits
Combinations of resistance in electric circuit There are two possible combinations of resistance in electric circuits: Series combination Parallel combination Series combination In series combinations, resistors are connected end to end and electric current has a single path through the…
-
What is difference between Electrostatic force and nuclear force
Electrostatic force Electrostatic force acts between charged particles only. Electrostatic force is a long range force. A proton can interact with all the protons within the nucleus through electrostatic force. Electrostatic force is a weak force. Nuclear force Nuclear force…
-
Eddy current: Definition, formula and Applications
What is eddy current? A current is induced in a conductor when subject to a varying magnetic field. Such currents are a source of energy dissipation (eddy current loss) in alternating current machinery. The reaction between the eddy currents in…