# Electricity & Megnetism

• ## What is Ohm’s law class 10?

Ohm’s law states that: “The current flowing through a conductor is directly proportional to the potential difference across its ends provided the physical state such as temperature etc. of the conductor remains constant.”The formula for ohm’s law is “V=IR”. Ohm…

• ## Ampere’s Circuital law

What is ampere’s law? According to Ampere’s law “The line integral of magnetic field B along a closed path due to current is equal to the product of the permeability of free space and the current enclosed by the closed…

• ## 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…

• ## Types of capacitors with applications

“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…

• ## Magnetic hysteresis loop for ferromagnetic materials

The value of flux density for any value of current is always greater when the current is decreasing, then when it is increasing magnetism lags behind the magnetizing current. This process is known as hysteresis. Hysteresis Loop definition To investigate…

• ## 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…

• ## 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…

• ## Joules law of heating equation

State Joule’s law of heating “The heat produced in a conductor is: (1) Directly proportion the square of current passing through the conductor,(H ∝ I²) keeping R and t constant; (2) Directly proportion to the resistance of the conductor (H ∝…

• ## Energy stored in a capacitor equation derivation and problems

Energy stored in a capacitor equation Consider a capacitor with the capacitance ‘C’ ,which is connected to the battery of emf ‘V’ .If ‘dq’ charge is transferred from one plate to other,then the work done ‘dW’ will be: dW =V…

• ## Inductance of a solenoid derivation

Inductance of a solenoid Now we will prove “Inductance of a solenoid derivation”. Consider a solenoid having n turns per unit length. When current passes through the solenoid, the magnetic field is produced inside the solenoid which is directed along…