Termonology Flashcards
Why are voltage sources sometimes connected in series?
requires more voltage
Why are voltage sources sometimes connected in parallel?
To increase current
what happens when voltage sources are incorrectly connected in parallel?
the voltage cancels
when voltage sources are connected series opposing , is the sum of the two sources larger or smaller than either of the two sources individually?
smaller
what is the relationship between the applied voltage and the load voltage in a parallel circuit?
voltage is equal across the circuit
what is the relationship between the line current and the branch currents in a parallel circuit?
line current=measures add together
what would happen to the total line current if an open circuit occurred in one of the loads?
it would decrease
what would happen to the total line current if a short circuit occurred in one of the loads?
increase
the net resistance of a circuit will __________ as more resistors are connected in parallel
decrease
In a parallel circuit, the sum of the _______ currents equals the ________ current
branch and line
If an open develops in one branch of a parallel circuit , the line current will _______ and the total circuit resistance will ________
decrease and increase
The ________ drop across each branch of a parallel circuit is the same
voltage
In a parallel circuit, increasing the number of branches will cause the circuit resistance to _______ and the circuit current to _______
decrease and increase
If a short develops across one branch of a parallel circuit in a combination circuit then the _______ increases and the _________ decreases
current and resistance
In a parallel circuit , the total resistance is always _______ than the lowest branch resistance
lower
Whether dealing with a series or a parallel circuit, the total circuit resistance can be found by dividing the total _______ by the total _________
voltage and current
A simple formula for determining the net resistance of “two resistors” in parallel is by using the ________ over the ________ method
product and sum
In residential circuit wiring, light outlets and receptacles are connected in _________
parallel
what happens to the current in a series circuit if you add a resistor?
current decreases
what happens to the current in a parallel circuit if you add a resistor?
current increases
What happens to the current in a series circuit if you open a resistor?
does not flow
what happens to the current in a parallel circuit if you open a resistor bank
it decreases
Kirchoffs voltage drop law?
The sum of all voltages within a closed loop must be equal to zero
In a parallel circuit what is the component that stays the same for every branch?
voltage
what can be moved from circuit to circuit?
resistance
Is power the same sum in parallel and series?
No
Overload fuses protect against what?
too much current
over current fuses protect against what?
overloads or short circuits
Potentiometer?
connected in parallel like a voltmeter and rheostats always connected in series
what 4 factors make up resistance in a piece of wire?
MALT material area length temperature
the wheatstone bridge is most commonly used for measuring?
measuring accurate resistance
equation to find the unknown in a bridge circuit?
R1 x Rx = R2 x R3
