Categories
Physics

Sources of Energy and uses, Classification: Renewable and non renewable

The following are the sources of energy: Energy from the sun (solar energy) Wood (fire wood) Coal Electricity Fossil fuels […]

Categories
Physics

The Concept of Energy, Types, Conservation of Energy

Energy is the ability or capacity to do work. Its unit is Joules. Types of Energy Kinetic and Potential Energy Slides: […]

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Physics

Role of the Sun in Energy Production

The sun is a spherical central body of the solar system that radiates light and heat. It has a diameter […]

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Physics

Arrangement of Resistors and Ohm’s Law

Resistors can be arranged in series and in parallel. have different potential differences. When they are connected in parallel, they […]

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Physics

Sources of Electric current

Sources of Electric Current Electric current can be generated from the following sources: Chemical energy:Electrical cells store chemical energy. There […]

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Notes

Electric current, Resistance, Electromotive Force (EMF), Circuit diagram

Electric Current Definition of Electric Current Electric current (l) is defined as the time rate of flow of electric charge along a conductor. I=Qt […]

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Physics

Basic Assumptions of the Kinetic Theory of Matter (Gases)

Basic Assumptions of the Kinetic Theory of Matter (Gases) The attractions between molecules are negligible The molecules of a gas […]

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Physics

Diffusion of Gases – Brownian Motion, Osmosis, Diffusion, Viscosity, Surface Tension

The molecular kinetic theory can be used to explain a number of phenomena. Some of these phenomena are: Brownian Motion […]

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Physics

Capillarity – Cohesion, Adhesion

Definition of Capillarity Capillarity (or capillary action) is the tendency of a liquid to rise or fall in a narrow […]

Categories
Physics

Properties of Fluids at Rest

Definition and Effects of Surface Tension Surface tension can be defined as the force per unit length normal or perpendicular […]