Basic concepts

Wheatstone Bridge Working Principle

Wheatstone Bridge Working Principle   Wheatstone devised a bridge-arrangement of resistances by which the resistance of a given conductor can be determined. This arrangement is called the ‘Wheatstone bridge‘.   In the arrangement, four resistances are so connected as to form a parallelogram. In one diagonal of this parallelogram is connected a galvanometer and in …

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Dielectric Strength | Constant | Loss | Definition

Normally, no current flows through insulators or dielectric materials. However, when the voltage applied to such materials exceeds a certain value, then it breaks down and a heavy electric current (much larger than the usual leakage current) flows through it. If the insulator is a solid medium, it gets punctured or destroyed.   Dielectric Strength …

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Electric Resistance | Resistivity |Definition | Formula

When the voltage is applied to an electrical circuit, the free electrons starts moving. When they are moving they collide with the other atoms and molecules of the substance. These collisions offer opposition to the flow of electrons or current called electric resistance.    Electric Resistance Definition | Formula | Explanation   Hence, the opposition …

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