Electricity & Megnetism

  • Types of Potentiometer

    Different types of potentiometers are provided here. This also includes Applications and Uses of potentiometers. Keep Reading … What is potentiometer? “A potentiometer is a very simple instrument which can measure and compare potential differences accurately”. Potential difference is usually…

  • Energy stored in a capacitor equation derivation and problems

    Energy stored in a capacitor equation Consider a capacitor with the capacitance ‘C’ , which is connected to the battery of emf ‘V’.If ‘dq’ charge is transferred from one plate to another, then the work done ‘dW’ will be: dW…

  • Difference between polar and non polar dielectric materials

    Dielectrics are insulating materials through which the electric current cannot pass easily, because these materials have a very high value of electrical resistance. For example, paper, pyrex, polystyrene, transformer oil, pure water, silicon, etc. Types of Dielectric materials There are…

  • Ammeter and voltmeter

    An ammeter is an electrical device that is used to measure the current. It is the modified form of the galvanometer. It is a low-resistance galvanometer. It is always connected in series with the circuit to measure current. An ideal…

  • Difference between Semiconductors and superconductors in tabular form

    The difference between semiconductors and superconductors is that semiconductors are materials that have properties that lie between conductors and insulators, while superconductors are those materials that act strangely when cooled down. What are Semiconductors? Semiconductors are those materials that are…

  • Difference between gravitational force and electrostatic force in tabular form

    The basic difference between gravitational and electrostatic force is that: Gravitational force is the force by which the earth attracts other objects by mass. It is a conservative force. While electrostatic force is the force of an object due to…

  • Faraday’s law of induction: Definition, Formula and Applications

    Faraday’s law of induction was discovered through experiments carried out by Micheal Faraday in England In 1831 and by Joseph Henry in the United States at about the same time. Even though Faraday published his results first, which gives him…

  • Types of Fuse

    Fuses are the elements that are used to protect against overloads and/or any short circuit. This when it detects a very high current above which it is calibrated as a consequence of an over-current that exceeds the value with which…

  • Types of circuit Breaker

    What is Circuit Breaker? A circuit breaker is a device that is capable of interrupting or opening an electrical circuit when the intensity of an electric current that flows through it exceeds a certain value or, when a short circuit…

  • Difference between series and parallel circuits

    Series circuits Vs Parallel circuits Series circuits and parallel circuits are two very basic types of circuits found in electronics and electrical engineering. Any circuit can be divided into elementary series circuits and parallel circuits. The ideas of series circuits and parallel…

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