Learning Material - Elements of Electric Circuit Flashcards
Amber rubbed with other materials it became charged with an UNKNOWN
force that had the power to attract objects
Electron
Amber was not the
only material that
could be charged to
attract other objects
Elektriks &
Nonelektriks
The piece of charged
glass would repel
some charged objects
and attract others
Attraction &
Repulsion
Any object repelled by a
piece of glass rubbed on
silk would have a positive
charge, and any item
repelled by a hard rubber
rod rubbed on wool would
have a negative charge.
Positive &
Negative
3 Principle Parts of an atom
Electron, Proton, and Neutron
When an electron
receives enough energy
from some other
source, it ____________ into a higher
allowed orbit.
quantum
jumps
“Electrical theory”
The valence shell of an
atom cannot hold more
than eight electrons
A quantity measurement for electrons
The Coulomb
The charge transferred by a current of 1 ampere in
one second
The Coulomb
1 C = 6.25 × 1018 electrons
The Coulomb
Who discovered Coulomb
Charles Augustin de Coulomb, French scientist
____________ of electrostatic charges states
that the force of electrostatic attraction or
repulsion is directly proportional to the product
of the two charges and inversely proportional to
the square of the distance between them
Coulomb’s Law
__________ is defined as the potential difference between
two points of a conducting wire carrying a constant
current of 1 ampere when the power dissipated
between these points is 1 watt
Volt
Also referred to as _______________, the force
that pushes the electrons through a wire and is
often referred to as electrical pressure
electromotive force
the voltage cannot flow, it only pushes the
current through a wire
true or false??
True
amount of potential difference
necessary to cause 1 C to produce 1 joule of work
1 volt (V)
The flow of electrons
Current
1 A = ?
one coulomb per second
Who discovered ampere
André Ampere
Ampere (A)
measurement of the
amount of electricity that is flowing
through a circuit
____________ theory states that current flows from negative to positive
Electron Flow
______________ theory states that current flow from positive to negative
Conventional Current Flow
allows current to flow all the way through it without any obstructions or breakages
Closed Circuit,
an electrical circuit that allows a current to travel along an unintended path with no or very low electrical impedance
SHORT CIRCUIT
____________ refers to a circuit that is connected to the Earth or a common reference point
GROUNDED CIRCUIT
It serves as a safety measure to prevent electrical shock, protect equipment, and reduce fire risk
GROUNDED CIRCUIT
Good Conductors?
Copper, Silver, aluminium, and gold
Good Insulators?
rubber, plastic, glass, and wood
Good Semiconductors?
Silicon, germanium
Limits the flow of current
Resistance
Produces a voltage divider
Resistance
- Measure of how strongly a material
opposes the flow of electrical current
Resistivity ()
the current is directly
proportional to the voltage and inversely
proportional to the resistance
DC circuit
