# Category Current Electricity

## Meter or slide wire bridge class 12 | working principle and construction. METER OR SLIDE WIRE BRIDGE Today, we are going to discuss another type of electrical circuit, which helps measure the unknown resistance. If we know the three quantities then the fourth can be obtained by the balanced condition property. This…

## Potentiometer class 12 | working principle, construction, theory and applications POTENTIOMETER (MEASURING INSTRUMENT) Around 1841, a method was described by the scientist Johann Christian Poggendorff, which helps in the measure of potential difference by the comparison of an unknown voltage to the reference known voltage. Over time this method became…

## Kelvin double bridge | definition and balanced equation derivation. Note: some equations can go out of your mobile screen. Please use landscape or desktop mode to view the complete equations. KELVIN BRIDGE OR KELVIN DOUBLE BRIDGE INTRODUCTION We are acquainted with Wheatstone bridge. Do we know that what is…

## Wheatstone bridge | working principle, construction, formula and its derivation [class 12]. WHEATSTONE BRIDGE An electrical bridge was invented by Samuel Hunter Christie in 1833 and further this electrical circuit bridge was enhanced and popularized by Sir Charles Wheatstone in 1843. For enhancing and popularizing this bridge, it was named Wheatstone bridge…

## Kirchhoff’s circuit laws | kirchhoff’s current and voltage laws | statement, formula, derivation and its limitations. KIRCHHOFF’S CIRCUIT LAWS INTRODUCTION Do we know how can we find the value of electric current, voltage, and resistance by using ohm’s law? Ohm’s Law gives you a direct method to find these values. If you know the formula V…

## Combination of cells in series and parallel class 12. COMBINATION OF CELLS INTRODUCTION In the previous articles, we have seen that how can we combine resistors in series and parallel? and how can we find the equivalent resistance for the same? Suggested reading – resistors in series and parallel.…

## Electrical energy and electrical power | definition | formula | units and difference between electrical energy and power. ELECTRICAL ENERGY AND ELECTRICAL POWER INTRODUCTION [Note: some formulas text can go out of the screen, view page in landscape or desktop mode] Electricity is the effect of the motion of electric charges that are sometimes called electrons. We know…

## Combination of resistors | combination of resistors in series and parallel. COMBINATION OF RESISTORS In the previous articles, we have discussed Resistors? and their various types and color-coding of the Resistors, and how to read Resistor’s color codes. But in this article, we will discuss the combination of the resistors in…