ELECTRIC CHARGE Flashcards
electric come from the Greek word of amber which is ——–
elektron
it is one of the basic forms of energy
electricity
it can be generated in many ways and is associated with charges electrons and protons
electricity
it is the electric discharge between a clound and the ground
Lightning
2 types of charges
static charge
moving charge
these are charges in which they stay in one place and can be produced by conduction and induction of charges via a charging body
Static
it is the flow of electric charges from one point to another
moving
it is like the current flowing through a wire
moving
2 types of charging processes
conduction
induction
it is charging with contact and where electrons move directly from one body to another
Conduction
it is charging without contact and is where electrons move to or from the ground
Induction
3 charging processes
positively charged
negatively charged
neutral
it when there is an excess of positive charges
positively charged
it is when there is an excess of negative charges
Negatively charged
it is when there is an equal number of positive and negative charges
Neutral
what type of charging process is it when a charging body (+) physically touches the neutral body
Charging by Conduction
what type of charging process is it when the polarization of Body B. The negative charges are attracted to the charging body (A). the positive charges are repelled by (A)
Charging by Conduction
what type of charging process is it when the flow of electrons from B to A because electrons are more mobile
Charging by Conduction
what type of charging process is it when Body B acquires the same charge as A. A and B repels
Charging by conduction
what type of charging process is it when a charging body (+) is brought near a neautral body (B) but without physical contact
Charging by Induction
what type of charging process is it when the polarization of body B. The negative charges are attracted to the charging body (A). the positive charges are repelled by (A)
Charging by Induction
what type of charging process is it when the grounding of Body B. The flow of electrons from the ground to B
Charging by Induction
what type of charging process is it when the Body B acquires negative charges and becomes negatively charged. A and B attract
Charging by Induction
like charges —–
repel
unlike charges —-
attract
it is when the net charge of the two objects taken together does not change
Law of conservation of charge
these are properties of matter are due its structure and electric nature of atoms
Bohr’s Model
2 types of interaction of particles
- Annhilation Process
- Pair Production
what interaction of particles process is this?
e- + e+ —-> y + y
Annihilation Process
what interaction of particles process is this?
y —–> e- + e+
Pair Production
What is the mass of ELECTRON, e-?
9.11 x 10^-31 kg
What is the charge of ELECTRON, e-?
-1.6 x 10^-19 C
What is the mass of PROTON, p?
1.67 x 10^-27 kg
What is the mass of NEUTRON?
1.67 x 10^-27 kg
What is the change of PROTON, p?
+ 1.6 x 10^-19 C
what are the 4 classification of materials?
- Conductors
- Insulators
- Semiconductors
- Superconductors
it is a conduct electric current in which significant number of charges are free to move
Conductors
these are non-conductors in which charges are very much localized (stays in position)
Insulators
it behaves as insulators and sometimes as conductors
Semiconductors
no resistance at a critical temperature
Superconducters
