Categories
Physics

Dielectrics

Science > Physics > Electrostatics > Dielectrics In this article, we shall study dielectric materials (dielectrics), their working and types. Dielectrics are non-conducting substances. In these materials, free-moving electrons are not present. Thus there is no question of the movement of charge. When the dielectric material is kept in an external electric field, a dipole […]

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Physics

Concept of Capacity of Conductor

Science > Physics > Electrostatics > Concept of Capacity of Conductor In this article, we shall study the concept of the capacity of conductor, capacitors and their types, and energy stored in the capacitor. Concept of Capacity of Conductor: Whenever an electric charge is deposited on a conductor, its potential increases. The deposited charge spreads […]

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Physics

Capacitors in Series and Capacitors in Parallel

Science > Physics > Electrostatics > Capacitors in Series and Capacitors in Parallel In this article, we shall study two simple capacitors circuits: capacitors in series and capacitors in parallel. We shall derive an expression for equivalent of such combination. Equivalent Capacity of Condensers in Series: A number of condensers are said to be joined […]

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Physics

Van De Graff Generator

Science > Physics > Electrostatics > Van De Graff Generator In this article, we shall study the principle, construction, working and uses of Van De Graff generator. Principle of Van De Graff Generator: Van de Graff generator uses two principles of electrostatics. The electric discharge takes place in air or gases at pointed conductors readily. This […]

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Physics

Numerical Problems on Current-Carrying Solenoid

Science > Physics > Magnetism > Numerical Problems on Current-Carrying Solenoid In this article, we shall study problems on current-carrying solenoid and current-carrying coil suspended in a uniform magnetic field. Example – 01: A solenoid has a core of material of relative permeability 4000. The number of turns is 1000 per metre. A current of […]

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Physics

Numerical Problems on Magnetic Susceptibility

Science > Physics > Magnetism > Numerical Problems on Magnetic Susceptibility In this article, we shall study problems to calculate magnetization, magnetic susceptibility, magnetic permeability, etc. μ = B / H μr  = B / B0 Example – 01: Find the magnetization of the bar magnet of length 10 cm and cross-sectional area 3 cm2. […]

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Physics

Magnetization and Magnetic Intensity

Science > Physics > Magnetism > Magnetization and Magnetic Intensity In this article, we shall study the origin of magnetism, magnetic intensity, magnetization, and magnetic susceptibility. Magnetic Field Due to Current-Carrying Coil: The magnetic induction at a point on the axis at a distance of ‘x’ from the centre of a circular coil of radius […]

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Physics

Magnetic Induction and Potential at any Point

Science > Physics > Magnetism > Magnetic Induction and Magnetic Potential at any Point In this article, we shall study to derive an expression for magnetic induction and magnetic potential at any point in a magnetic field created by a bar magnet. Magnetic Induction at Any Point Due to a Short Bar Magnet: Consider a […]

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Physics

Quantization of Electric Charge

Science > Physics > Electrostatics > Quantization of Electric Charge In this article, we shall study the concept of quantization of electric charge and the principle of conservation of electric charges. The fact that all observable charges are always some integral multiple of elementary charge e = 1.6 × 10-19 C is known as quantization […]

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Physics

Charging a Body and Detection of Charge

Science > Physics > Electrostatics > Charging a Body and Detection of Charge In this article, we shall study methods of charging of body and different apparatus used for detection of charge on the body. Charging of Body: Charging by Friction: When a body is rubbed to another, there is a transfer of electrons from […]