## Potentiometer Variable Resistor Working Principle

A potentiometer or a rheostat is an instrument used to measure and compare potentials without drawing any current from … Read More

## Wheatstone Bridge Circuit Theory and Working Principle

Wheatstone bridge is used to measure unknown resistance and is defined by the circuit of the following figure. In … Read More

## RC Series Circuit Analysis | RC Time Constant

In the case of a resistive-capacitive (RC) series circuit, when the supply is first switched on the charging … Read More

## Magnetic Force on a Current Carrying Conductor

A current carrying conductor produces its own magnetic field. Such a conductor is placed in a magnetic field. … Read More

## Resistors in Series and Parallel

Learning Outcomes Calculate the total resistance of different resistor combinations i.e., series, parallel, and series-parallel. Show how resistors … Read More

## AC Energy Meter Working Principle

Energy is the product of power and time and is measured in watt-seconds or Joule. Since the voltage … Read More

## Capacitors in Series and Capacitors in Parallel

A capacitor is a passive device which stores energy in an electric field and opposes the change in … Read More

## Difference Between Diamagnetism, Paramagnetism, and Ferromagnetism

This article examines key differences between diamagnetic, paramagnetic, and ferromagnetic materials.    In order to classify materials as … Read More

## Power Measurement In a Three-Phase System using Wattmeter

Wattmeter is an instrument, used to measure power in a circuit using current and voltage of the circuit. … Read More

## RL Series Circuit Analysis

When a resistive-inductive (RL) series circuit has its supply voltage switched on, the inductance produces an initial maximum … Read More

## Magnetic lines of Force | Magnetic Field

When current flows in a wire, it creates a magnetic effect around the wire which is called magnetic … Read More