Module 1 Flashcards
The time where Greeks were aware that amber when rubbed vigorously with a piece of cloth could attract nearby objects.
600 B.C.
He named substances that attracts as electrics which comes from the Greek word electron meaning “amber”.
William Gilbert
It is called the electricity at rest. It refers to the electric charges that build up on the surface of materials and substances.
Static Electricity
It is the phenomenon associated with stationary or moving electric charges.
Electricity
A Greek who found that when amber was rubbed with silk it attracted feathers and other light objects. He had discovered static electricity.
Thales 600 B.C.
It is also known as electricity due to the movement or flowing of electrons
Current electricity
A scientist and physician to Queen Elizabeth I, invented the term electricity (from the Greek word for amber, elecktra). He was the first person to describe the earth’s magnetic field and to realize that there is a relationship between electricity and magnetism.
William Gilbert 1600
He invented neon light.
Francis Hauksbee
He proved that lightning is a form of electricity
Benjamin Franklin
A machine that is used to produce static electricity easily and reliably.
Wimshurst machine
It is the area of physics that deals with objects that have an electric charge.
Electrostatics
It is a property of matter that is responsible for all electric and magnetic forces and interactions.
Electric charge
It is a build-up of stationary electric charge on a substance, electricity at rest.
Static Electricity
According to Bohr – Rutherford model of the atom, matter is composed of sub – microscopic particles called?
Atoms
According to Bohr – Rutherford model of the atom, electric charges are carried by particles within the atom that are called?
Protons and electrons
According to Bohr - Rutherford model, protons are found in a small central region of the atom called the
Nucleus
_____ a fundamental constant that is the smallest known quantity of electricity and that has a value (either positive or negative) of 1.602176634 ×10-19 coulombs.
elementary charge, 1.6 x 10^-19 C
They are small, very light particles
(each with only slightly more than 1/2000 the mass of a proton), yet each of them
carries a negative electric charge equal in magnitude to that of the proton.
Electrons
Atoms are normally electrically _____, because the number of (positive) protons in
the nucleus is equal to the number of (negative) electrons in the space around the
nucleus.
Neutral
They are small, heavy particles (each slightly heavier than a proton) found in
the nucleus. They carry no electrical charge.
Neutrons
If an atom gains an extra electron, it is no longer neutral but has an excess of electrons and what net charge?
Negative charge
If an atom losses an electron, it will have a deficient electrons and what net charge?
Positive charge
mass of electron is =
9.11 x 10^-31 kg
1 C =
6.24 x 10^18 -e
