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Category Archives for "Physics"

Carnot Cycle

Carnot Cycle was proposed by the Famous French scientist Sadi Carnot planned an engine having no defect or loss. Actually it is not possible no one could make and will not invent that type of engine has no loss because we know from second law of thermodynamics there a loss must converting energy of form […]

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X-Ray Production Theory

Wilhelm Röntgen discovered X-rays. He was doing research with the discharge tube he observed that fluorescence was produced when cathode rays were incident on barium platino-cyanide sheet placed on the side of the tube. He observed fluorescence on the sheet covering the discharge tube with a thick red paper. Then by placing a thick metallic […]

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Combination of Cells

Why cell combination needed? A cell is an electrical element which produces current and a battery is a set of some cells with series or parallel connection. A cell is an active element. To increase the rate of current and voltage supply, cells are connected as manner in series or parallel or mix combination. Internal […]

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How To Read Resistor Color Code

Resistor and Resistance Resistance is a property of conductor. Resistivity depends upon conductor to conductor. Some have less resistivity which is good conductor, some have high resistivity which is bad conductor. In a circuit the wire we use is good conductor and it has low resistivity. There is no material without resistance in the world. […]

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Electrical Ohm’s Law

In 1826 famous German scientist Gorge Simon Ohm invented a relation between voltage and current. He expressed the relation in a formula which is known as Ohm’s Law. This formula seems very simple but it has a great contribution in ac current.

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Wheatstone Bridge

Wheatstone bridge is a bridge where four resistances are used. First and second resistance are connected in series; third and fourth resistance are also connected in series. Then the first and second two combinations are connected in parallel make Wheatstone bridge.

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Biot Savart Law

To understand completely Biot Savart Law some important rules or laws should be known are Maxwell cork screw Law, Fleming’s right hand rule. If current passes through a conductor it creates a magnetic field around it. The direction of the magnetic field for passing current through conductor explained by Maxwell cork screw Law & Fleming’s […]

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