An art infused learning platform
बल की संकल्पना बल की संकल्पना :- बल वह कारक है जो स्थिर वस्तु को गतिशील या गतिशील वस्तु की स्थिति में परिवर्तन करता है अथवा ऐसा करने का प्रयास करता है। या दूसरे शब्दों में … बल वह भौतिक राशि है, जो किसी वस्तु में त्वरण उत्पन्न करे अथवा त्वरण उत्पन्न करने…
Stress in Physics Stress in Physics The internal restoring force acting per unit area of cross–section of the deformed body is called stress. Stress = (Internal Restoring force/Area of cross section) = Finternal/A = Fexternal/A SI Unit : Nm–2 Dimensions : [M1 L–1 T–2] Types of stress (Stress in Physics) (a) Longitudinal Stress (b) Volume…
Form of Coulomb’s Law when Dielectric is filled partially between the charges Coulomb’s Law with partially filled Dielectric between the charges :- Suppose two charge particles q1 and q2 are placed r distance apart in vacuum, then from Coulomb’s Law force acting between them:- Now let a dielectric medium ( of permittivity εr…
Read More “Form of Coulomb’s Law when Dielectric is filled partially between the charges” »
Electrostatic Equilibrium of charged particles Electrostatic Equilibrium:- In equilibrium net electric force on every charged particle is zero. The equilibrium of a charged particle, under the action of Colombian forces alone can never be stable. Equilibrium is of three types:- (a) Stable Equilibrium : A charge is initially in equilibrium position and is displaced by…
Read More “Electrostatic Equilibrium of charged particles” »
Principle of superposition Principle of superposition :- The force is a two body interaction, i.e., electrical force between two point charges is independent of presence or absence of other charges and so the principle of superposition is valid, i.e., “force on a charged particle due to number of point charges is the resultant…
Numerical on Coulomb’s Law Numerical : – Example 1. Find out the electrostatics force between two point charges placed in air (each of +1 C) if they are separated by 1m . Example 2. Two particles having charges q1 and q2 when kept at a certain distance, exert a force F on each…
COP(Heat Pump)=COP(Refrigerator)+1 Heat PUmp: Heat pump is a device that transfers heat from a colder area to a hotter area by using mechanical energy, as in a refrigerator. In heat pump how much heat is rejected at higher temperature is an important quantity. Coefficient of performance of Heat Pump ⇒ ∴ ……….(1) Refrigerator:…
Coulomb’s Law Coulomb’s Law :- On the basis of experiments, Coulomb established the following law known as Coulomb’s law. The magnitude of electrostatic force between two point charges is (i) directly proportional to the product of charges and (ii) inversely proportional to the square of the distance between them. i.e. and ⇒…
Methods of Charging of a body The different methods of Charging of a body are :- (a) friction, (b) conduction, (c) induction, (d) thermionic ionization or thermionic emission (e) photoelectric effect and (f) field emission. (a) Charging by Friction : When a neutral body is rubbed against other neutral body then some electrons…
Properties of Electric Charge Properties of Electric Charge :- (i) Charge is a scalar quantity : It adds algebraically and represents excess, or deficiency of electrons. (ii) Charge is of two types : (a) Positive charge and (b) Negative charge Charging a body implies transfer of charge (electrons) from one body to another….