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Showing posts from February, 2022

Keplers’s Laws of Planetary Motion, Kepler's Law, Law of Orbits, Law of Areas, Law of periods

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  Keplers’s Laws of Planetary Motion: 1 st law ( Law of Orbits ): Every planet moves around the sun in elliptical orbit with the sun at one of the foci of the elliptical orbit. 2 nd   law ( Law of Areas): The line joining the planet to the sun sweeps over equal areas in equal intervals of time.                                                             Area of SAB = Area of SCD  2 nd   law tells us that a planet does not move with constant speed around the sun. It speeds up while approaching the nearest point called ‘ perigee’ and slows downs while approaching the farthest point called ‘ apogee’. therefore, distance covered on the orbit with in the given interval of time at perigee is greater than that at apogee such that areas swept are equal. 3 rd Law ( Law of periods): The square of the time periods of revolution of...

ohms law, ohms law formulas, what is ohms law, ohms law equations, ohms law definition, define ohms law, Non Ohmic Conductor

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                                                     Ohm’s Law The relationship between voltage (V), the current (I) and resistance (R)  in a d.c. circuit was first discovered by German scientist George Simon *Ohm. This relationship is called Ohm’s Law and may be stated as under :   The ratio of potential difference (V) between the end of a conductor to the current (I) flowing between them is constant, provided the physical condition ( e.g. temp. And pressure ) do not change i.e.                                   V/I  =  Constant = R Where R is the resistance of the conductor between the point considered. For example, if in Fig. (a) the voltage between points A and B volts and ...

Kirchhoff’s Laws Kirchhoff’s Current Law (KCL) Kirchhoff’s Voltage Law (KVL) Kirchhoff’s Laws derivation

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                                Kirchhoff’s Laws        Kirchhoff’s Circuit Laws are two equalities that deal with the conservation of charge and energy in electrical circuits.   There basically two Kirchhoff’s Law :-   01.   Kirchhoff’s Current Law (KCL) - Based on principle of conservation of electric charge.   02.    Kirchhoff’s Voltage Law (KVL) - Based on principle of conservation of energy.                    Kirchhoff’s Current Law (KCL)         ⃝   The rule is also called Kirchhoff’s first law, Kirchhoff’s point rule, Kirchhoff’s junction rule (or nodal rule).   ⃝    It states that at the junction, sum of current entering the junction is equal to the...

Faraday's Law, Faraday's laws derivation and faraday's Law application and lenz's law

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  Faraday’s Law of Electromagnetic induction :-   Great experiment physicist and chemist :-   1791- 1867 :-   Contribution to early electricity include:       - Invention of motor, Generator, and Transformer       - Electromagnetic Induction      - Laws of electrolysis : A method of separating bonded element and        Compounds by passing an current through them.   Electromotive Force (EMF) Produced by Changing Magnetic Field, 1 :-  A loop of wire is connected to a sensitive ammeter. :-   When a magnet is moved toward the loop, the ammeter deflects. Electromotive Force (EMF) Produced by Changing Magnetic Field, 2 :-   When the magnet is held stationary, there is no deflection of the ammeter. :-   Therefore, there is no induced current      :- Even though the magnet is in the loop.   Electromotive Force (...