Midterm Flashcards
The direct oppistion to the flow of electric charge is
resistance
Like charges will
repel each other
Alternating current differs from Direct current by having:
periodic changes in direction
What should happen to circuit current when the original circuit resistance is doubled?
halved
If the voltage applied to an appliance is double the power will be
quadrupled
In an energized series circuit of equal resistances
The current will be the same through every resistor
The rate of doing work is measured in
Power
A positive charge is
a deficiency of electrons
Electric power can be determined from the basic electrical quantities by:
The product of voltage and current
A volt is equivalent to a:
joule per coulomb
The rate of energy conversion is measured in
Watts
The rate of flow of charge is measured in
amperes (1C/s)
When combining series resistors, the total resistance will always be
larger than the largest resistance
In an energized series circuit of unequal resistances
The largest resistance will have the largest voltage drop
List four factors which affect the resistance of conductors
cross sectional area, lenght, material and temperature
If the diameter of a wire is doubled the resistance will be
one-fourth as great
In a parallel circuit of unequal resistances
The smallest resistor will carry the largest current
When combining parallel resistors, the equivalent resistance will always be:
smaller than the smallest resistor
Voltage in a purely parallel resistor circuit
is the same for each resistor
A short circuit
has negligible resistance
The three elements of a basic circuit are
Power Source
Conductors
Load
