Drafting Quiz 2 Flashcards
(24 cards)
Is made out of atoms.
Matter
Contains positivity charged protons, negatively charged electrons and neutral neutron.
Atoms
Materials that permit electric charge to move within them are called__while those do not are called?
Conductors and insulators
The build up of electric charge is called?
Static electricity
Can be made to flow from a source such as battery, photocell or electric generator
Electric charges
Is the movement of charged particles in a wire to a specific direction, the charged particles can be positive ion or negative ion
Current
The symbol of ampere is?
A
The symbol for voltage is __which is joule per coulomb
V
Is the opposition to the flow of charge
Resistance
The unit used to specify the amount of resistance is the
Ohm
In direct current (d-c) this unit is callrd
Resistance
In an alternating current (a-c) it is called
Impendence
Resistance of the object depends on four factors
Lengths. Cross-sectional area. Resistivity of material and. Temperature
Although the three electrical quantities ,current , voltage and resistance, are used differently,they are related to each other, this is known as
Ohms law
Is the rate of doing electrical work
Electric power
A kilowatt is
1000 watts
Is the unidirectional flow of electric charge.
Direct current (DC)
Is the movement or flow of electric charge which periodically in reverses direction.
Alternating current (ac)
One ampere of current flows in a conductor when __ electrons pass a given
6.251x1018
is also known as electromotive force (emf) or potential difference.
Voltage
