Month: August 2021

What is Electric Resistance

What is Electric Resistance

A circuit is a closed path where electrons move to generate current. To answer the question, what is electric resistance of an object, is to know the measure of its opposition to the flow of current. Its reciprocal is conductance, measuring the ease with which current passes. CONTENT DEFINITION RESISTANCE CONDUCTORS AND INSULATORS TYPES OF…

Electric Current and It’s Field

Electric Current and It’s Field

Electric current possess electrical property associated with each point in space when a charge exists in any form. The size and direction of the electric field are represented by the value of E, called electric field strength or electric field strength or simply electric field. CONTENT ELECTRIC CURRENT POTENTIAL DIFFERENCE ELECTROMOTIVE FORCE SOURCES OF ELECTRIC…

Fields at rest; Surface tension in water

Fields at rest; Surface tension in water

Stationary liquids usually take the shape of containers. If the volume of the container is greater than the volume of the liquid placed in it, there will be a free surface at the top of the liquid. The difference between a gas and a liquid is that the gas has neither size nor shape. The…

Nature of Matter II: Molecules

Nature of Matter II: Molecules

Molecules, are groups of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance. CONTENT WHAT ARE MOLECULES STRUCTURE OF MOLECULES IT’S NATURE AND SIZE KINETIC THEORY OF GASES   WHAT ARE MOLECULES A molecule is…

Particulate Nature: Matter state I

Historically, matter state is distinguished based on qualitative differences in its ontological properties. A solid is a state in which a substance maintains a fixed volume and shape; a liquid is a state in which a substance adapts to the shape of its container but the volume changes only slightly; a gas is a state…

Force Fields, It’s Concept

Force Fields, It’s Concept

In physics, force fields  are vector fields that describes the non-contact forces acting on particles at different positions in space. CONTENT CONCEPT OF FIELDS TYPES OF FIELDS PROPERTIES OF FORCE FIELD ACCELERATION DUE TO GRAVITY   CONCEPT OF FORCE FIELDS A force field is a map of the forces felt in a specific area of…

Heat Energy II: Thermal Expansion

Heat Energy II: Thermal Expansion

Expansivity or Expansion is the amount a material expands or contracts per unit length due to a one-degree change in temperature. CONTENT CONCEPT OF EXPANSIVITY THERMAL EXPANSIVITY CONSEQUENCES AND APPLICATION OF EXPANSION   CONCEPT OF EXPANSIVITY Thermal expansivity is the tendency of matter to change in volume in response to a change in temperature. It…

Heat Energy I: Heat Transfer

Heat Energy I: Heat Transfer

Heat is defined in physics as the transfer of heat energy over well-defined boundaries around a thermodynamic system. Thermodynamic free energy is the amount of work that a thermodynamic system can perform. CONTENT TRANSMISSION OF HEAT METHODS OF HEAT TRANSFER CONDUCTION CONVECTION RADIATION   TRANSMISSION OF HEAT Heat transfer, any or all of several phenomena,…

HEAT ENERGY AND TEMPERATURE

HEAT ENERGY AND TEMPERATURE

Heat energy is transferred from one body to another due to temperature differences. If two bodies of different temperatures are brought together, the energy will be transferred from the hotter body to the colder body, that is, the heat flow. The effect of this energy transfer is usually but not always, that the temperature of…

RELATIONSHIP BETWEEN WORK AND POWER

RELATIONSHIP BETWEEN WORK AND POWER

Work is called the process of transferring energy to the movement of an object by applying a force. It is usually expressed as the product of displacement and force. Power is the amount of energy transmitted per unit time. CONTENT CONCEPT OF WORK WORK DONE IN FORCE FIELD INTERCHANGEBILITY OF WORK AND ENERGY CALCULATING WORK…

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