Physics

Uniform electric field: If the magnitude and direction of the electric field are same everywhere, then the field is called uniform electric field [Figure]. Example:…

Before discussing electric field let define a test charge., “An imaginary charge of exceedingly small magnitude whose presence does not affect other charges i.e. does…

Superposition principle of electric force In order to find the resultant force, all charges are considered separately with that particular charge as if all other…

Electric force In an electric field there always exists a force on a charge. If the charge is positive then the force acts along the…

Field Theory The attractive or repulsive force between two charges acts without any physical contact between them. So, like magnetic force or gravitational force, the…

Coulomb’s law: Mathematical Explanation At a particular medium, the magnitude of the attractive or repulsive force between two point charges is directly proportional to the…

Coulomb’s Law in terms of Point Charges We know, a charge attracts or repels another charge. The force of attraction or repulsion between two charges…

Formulation of Second Law of Thermodynamics in terms of Entropy The thermal property that remains constant in the adiabatic process is called entropy. Alternately, entropy…

The thermal property that remains constant in the adiabatic process is called entropy. It is stored as potential energy in a form that can do…

Efficiency of Carnot’s Engine The Carnot’s engine is called an ideal engine. The most efficient heat engine cycle is the Carnot cycle, consisting of two…