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Articles related to class 9, 10, 11, 12 and B.Sc.

Charge Density Formulas and Solved Example

In this article, we would learn about charge density and its formulas and would also solve some problems related to this concept. We encounter electric charge density while calculating electric field from various continuous charge distributions like linear, surface and volume. We also need the concept of charge density while studying current electricity. What is Charge Density? […]

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Use of units in physics

Introduction about physics and studying the subject This article is mainly about use of units in physics. But before going further let us first discuss about how to avoid problems that students face while studying physics. When you study physics you must have appropriate skills or you would have to struggle a lot while studying


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How to calculate percentage error

In this article, we will discuss how to calculate percentage error and this applies to measurements in both physics and chemistry. Both physics and chemistry are sciences that depend on measurements. While doing experiments it is expected that we get values that are accurate but our instruments have limitations. Since our instruments are not accurate

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Difference between pound and kilogram (kg vs lbs)

Pounds and kilograms are two of the many units used for the measurement of mass. Physical quantities need units for their measurement. We need standard well-defined units for measurement of physical quantities. Although both pound and kilogram are units of mass but there are some profound differences between these two units of mass. A pound


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