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Flashcards in Termonology Deck (32):
1

Why are voltage sources sometimes connected in series?

requires more voltage

2

Why are voltage sources sometimes connected in parallel?

To increase current

3

what happens when voltage sources are incorrectly connected in parallel?

the voltage cancels

4

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

5

what is the relationship between the applied voltage and the load voltage in a parallel circuit?

voltage is equal across the circuit

6

what is the relationship between the line current and the branch currents in a parallel circuit?

line current=measures add together

7

what would happen to the total line current if an open circuit occurred in one of the loads?

it would decrease

8

what would happen to the total line current if a short circuit occurred in one of the loads?

increase

9

the net resistance of a circuit will __________ as more resistors are connected in parallel

decrease

10

In a parallel circuit, the sum of the _______ currents equals the ________ current

branch and line

11

If an open develops in one branch of a parallel circuit , the line current will _______ and the total circuit resistance will ________

decrease and increase

12

The ________ drop across each branch of a parallel circuit is the same

voltage

13

In a parallel circuit, increasing the number of branches will cause the circuit resistance to _______ and the circuit current to _______

decrease and increase

14

If a short develops across one branch of a parallel circuit in a combination circuit then the _______ increases and the _________ decreases

current and resistance

15

In a parallel circuit , the total resistance is always _______ than the lowest branch resistance

lower

16

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

17

A simple formula for determining the net resistance of “two resistors” in parallel is by using the ________ over the ________ method

product and sum

18

In residential circuit wiring, light outlets and receptacles are connected in _________

parallel

19

what happens to the current in a series circuit if you add a resistor?

current decreases

20

what happens to the current in a parallel circuit if you add a resistor?

current increases

21

What happens to the current in a series circuit if you open a resistor?

does not flow

22

what happens to the current in a parallel circuit if you open a resistor bank

it decreases

23

Kirchoffs voltage drop law?

The sum of all voltages within a closed loop must be equal to zero

24

In a parallel circuit what is the component that stays the same for every branch?

voltage

25

what can be moved from circuit to circuit?

resistance

26

Is power the same sum in parallel and series?

No

27

Overload fuses protect against what?

too much current

28

over current fuses protect against what?

overloads or short circuits

29

Potentiometer?

connected in parallel like a voltmeter and rheostats always connected in series

30

what 4 factors make up resistance in a piece of wire?

MALT
material
area
length
temperature

31

the wheatstone bridge is most commonly used for measuring?

measuring accurate resistance

32

equation to find the unknown in a bridge circuit?

R1 x Rx = R2 x R3