Charles-AugustindeCoulomb (1736–1806) was a French physicist and engineer who made significant contributions to several areas of science, including mechanics, electricity, and magnetism.
Coulomb's Law is a fundamental principle in physics that describes the electrostatic force between two charged objects
Electric field is defined as the electric force per unit charge.
Electric force is the force that pushes apart two like charges, or that pulls together two unlike charges.
The electric field is a “force field” around a charged object that illustrates the direction. the electric force would push an imaginary positively charged particle if there was one there.▹
Electric flux is the rate of flow of the electric field through a given area.
Electric flux is the property of an electric field that may be thought of as the number of electric lines of force that intersect a given area.
Electric field lines are considered to originate on positive electric charges and to terminate negative charges.
Electric field is the region where an object with a charge experiences a moment due to another object.
The electric field of a point charge always points away from a positive charge but towards a negative charge.
Physics is a major science dealing with the fundamental constituents of the universe, the forces they exert on one another, and the effects of these forces.
Physics is both descriptive and predictive in nature.
Descriptive- aspect deals with conceptual understanding.
Predictive- aspect involves the use of mathematics.
Mechanics- is the oldest and the most basic branch of physics.
Heat- includes the principle of temperature measurement.
Sound- concerned with vibrations and waves with their recording transmission and perception.
Optics- concerned with the nature and propagation of light.
Electricity and magnetism- deals with the other aspect of matter and space.
Modern Physics- includes atomic physics, nuclear physics, Einstein’s theory of relativity and quantum physics.
Physics deals with the measurement of physical quantities.
English System also known as FPS system
Metric System and known worldwide as International System of Units.
The word “electric” is derived from the Greek
word “elektron”, meaning amber.
In the 18th century, Benjamin Franklin in America tried experiments with charges. It was Franklin who named the two kinds of electric charges: ‘positive’ and ‘negative’.
Electricity is a form of energy resulting from the movement of charged particles, such as electrons. It is a fundamental aspect of nature and is essential for powering various devices and systems in our modern world.
Electron affinity is defined as the change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when an electron is added to the atom to form a negative ion.
Frictionalcharging process results in a transfer of electrons between two objects that are rubbed together.
Frictional charging is a very common method of charging an object.
Induction charging - a method used to charge an object without actually touching the object to any other charged object.
Electrons- negatively charged; they are repelled by the negative charged tube.
Conductor, electric current can flow freely; in an insulator it cannot.
Conductors implies that the outer electrons of the atoms are loosely bound and free to move through the material.
Semiconductors are materials which have a conductivitybetweenconductors (generally metals) and nonconductors or insulators (such as most ceramics).
Superconductivity can only typically be achieved at very cold temperatures.
A superconductor is a material that achieves superconductivity, which is a state of matter that has no electrical resistance and does not allow magnetic fields to penetrate.
An insulator is a material in which electric current does not flow freely. The atoms of the insulator have tightly bound electrons which cannot readily move.