Electricity & Megnetism
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biot savart law:definition, examples, problems and applications
What is the definition of biot savart law? Biot Savart law is defined as: “The magnetic induction at any point produced by current element is directly proportional to the product of the current and the differential element and inversely proportional…
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Difference Between Voltage and Current
The basic difference between voltage and current is that Voltage is the amount of energy per charge which is required to move electrons from one point to another, while current is the rate of flow of charges. What is voltage…
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Factors Affecting Resistance
Resistance is the property of the material that restricts the flow of electrons. There are four factors affecting resistance which are Temperature, Length of wire, Area of the cross-section of the wire, and nature of the material. When there is…
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Types of electromagnetic radiation in order of increasing wavelength
There are 7 types of electromagnetic radiation which are given in the list below: Light Infrared radiation Microwaves radiations X-rays Ultraviolet radiations Radiowaves Gamma rays What is Electromagnetic Spectrum? The word spectrum comes from a Latin word meaning “form” or…
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What is difference between step up and step down transformer?
The transformer is an electrical device that is used to step up or step down ac voltage. There are two types of transformer, step up and step down. The difference between step up and step down transformer is that step-up…
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5 band resistor colour code
Carbon resistors are most common in electronic equipment. They consist of a high-grade ceramic rod or cone ( called the substrate on which is deposited a thin resistive film of carbon. The numerical value of their resistance is indicated by…
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Structure of atom for class 9 and 11
what is Atom? “Atom is the smallest particle of an element that possesses the unique characteristics of that element.” All matter is composed of atoms; all atoms consist of electrons, protons, and neutrons except normal hydrogen, which does not have…
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what is Difference between induced emf and induced current?
There are many ways to produce induced emf figures illustrated one of them. Consider a straight piece of wire of length l placed in the magnetic field of a permanent magnet. The wire is connected to a sensitive galvanometer. This…
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What is difference between electric field and electric field intensity?
The Basic Difference between electric field and electric field intensity is that, The electric field is a region around a charge in which it exerts an electrostatic force on other charges. While the strength of the electric field at any…
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Kirchhoff’s voltage and current law with examples
What is Kirchhoff’s Voltage Law? Kirchhoff’s voltage law is a fundamental circuit law that states that the algebraic sum of all the voltages around a closed path is zero or, in other words, the sum of the voltage drops equals…