Electrical Theory Flashcards
(21 cards)
What does the I stand for
The current
What materials are good insulators
Wood Paper Rubber Mica Plastic Woven fabrics Glass
What materials are good conductors
Brass Copper Aluminium Sliver Carbon Gold
What holds the electrons in orbet
Force of attraction
Whats the outer most orbit known as
The valence shell
Which way does flow always go
Negative ——> Positive
What is current
the flow of electrons
What is voltage
Voltage is the pressure
6 methods in which voltage can be produced
- chemical
- friction
- induction
- pressure
- heat
- light
What type of metal is needed to produce a voltage
Two different metal materials
Four factors that effect conductors
- temp
- length
- material
- cross sectional area
Define resistance
Resistance is the opposition to current flow
If current flow goes from positive to negative what is it called
Conventional current flow
Whats electromotive force
Is the force that drives the current around the circuit
Whats the outer orbit of an attom called
Valance shell
What is the electron in the outer orbit called
Valance electron
Whats the polarity of an electron
Negative
If an atom is removed by external force it is know as a
Positive ion
Whats the unit of measurement for current
Amps
To produce voltage chemically the two metal plates need to be made of
Two different metals
What is the name given to the materials in a solar panel
Semi conductors
