M1 Flashcards
“the flow of electrons through simple materials and devices”
ELECTRICITY
“smallest particle of an element”
ATOM
What are the two subatomic particles of nucleus?
Protons
Neutrons
“positive charge”
PROTON
“slightly heavier than the proton”
NEUTRON
“negative charge”
ELECTRONS
The directions of movement between atoms is ________ unless a force cause the electrons to move…
RANDOM
“a path or line through which an electrical current flow”
ELECTRICAL CIRCUIT
“makes the electrical current flow possible”
CLOSED CIRCUIT
“cuts off the electrical current flow”
OPEN CIRCUIT
“materials that allow electricity”
ELECTRICAL CONDUCTORS
“magnitude of the charge”
COULOMBS
“…charged if it has either excess or deficit of electrons…”
ELECTRIC CHARGE
Electric charge happens due to ____?
SHARING
EMF stands for?
ELECTROMOTIVE FORCE
“electrical potential” or it is numerically expressed as the number of Joules of energy given by the source divided by each Coulomb
EMF
Unit of EMF
VOLT
“amount of energy per unit charge needed to move a charged particle”
POTENTIAL DIFFERENCE
1 Electron = ____ Coulombs
1.59 × 10^-19
1 Coulomb = ____ Electrons
6.28 × 10^18
Area of Triangle
1/2 bh
Area of Rectangle
LW
Units of Total Charge
Q
What are the factors affecting resistance?
- Length
- Cross-Sectional Area
- Material (Resistivity)
- Temperature
Formula of Temperature Coefficient
a = 1/(T + t); wherein a is alpha
Which of the factors is inversely proportional to resistance?
Cross-Sectional Area
Formula of Temperature in relation with Resistance
Rsub2 / Rsub1 = 1 + alpha (tsub2 - tsub1)
or
Rsub2 / Rsub1 = (T + tsub2) / (T + tsub1)
Formula of Resistance in relation with factors
R = pL/A
“force that operates between charges”
ELECTROSTATIC FORCE
