Deck 5: Series Circuits

Question 1

In a series connected short circuit, the voltage across each good component ______________.

Answer 1

increases

Question 2

When components are connected in successive order, they form a ______________ circuit.

Answer 2

series

Question 3

Adding series resistance ______________ the current.

Answer 3

reduces

Question 4

With current through a resistance, the voltage across the resistance is equal to ______________ times resistance.

Question 5

In a series circuit, individual voltage drops are ______________ to the series resistance values.

Question 6

The ______________ of an IR voltage drop can be associated with the direction of current through resistance.

Question 7

When using double subscript notation, generally the first letter indicates the point of measurement and the second letter is the

A) voltage source
B) voltage divider
C) second voltage drop
D) reference point

Question 8

To diagnose or to analyze is other name for

A) operating
B) designing
C) troubleshooting
D) disassembling

Question 9

A break in the current path of a series circuit is called a(n)

A) open
B) short
C) reference point
D) ground point

Question 10

An extremely low resistance path for current flow is called a(n)

A) open
B) short
C) reference point
D) ground point

Question 11

The voltage drop across a series connected shorted component

A) decreases to zero
B) increases to the value of the power source
C) remains the same
D) doubles in value

Question 12

In a series circuit containing an open, all the good components will have a voltage

A) increase from their normal value
B) decrease from their normal value to 0V
C) increase from their normal value to the value of the power source
D) that is the same as when the circuit was operating normally

Question 13

In a series circuit, what is constant?

A) Resistance
B) Current
C) Voltage
D) Power

Question 14

Components that are in the same current path are called

A) series components
B) parallel components
C) series-parallel components
D) active

Question 15

The total resistance of a series string is equal to the

A) value of any one resistance
B) product over the sum of any two resistances
C) the sum of the individual resistances
D) the sum of the individual conductances

Question 16

A combination of series resistances is often called a

A) combination
B) branch
C) node
D) string

Question 17

Adding series resistance

A) increases the current
B) decreases the current
C) increases the voltage
D) decreases the power

Question 18

The IR voltage across each series connected resistor is called a(n)

A) voltage drop
B) current drop
C) constant voltage
D) current pump

Question 19

With no current through a resistor, the resistor has only

A) minimal voltage across it
B) power dissipated
C) resistance
D) energy

Question 20

Whose law states that the sum of all resistor voltage drops in a series circuit equals the applied voltage?

A) Ohm
B) Lenz
C) Fourier
D) Kirchhoff

Question 21

The power needed to produce current in each series resistor is used up in the form of

A) light
B) noise
C) heat
D) hum

Question 22

The total power used in a series circuit is the

A) value of power dissipated in one part of the circuit
B) sum of the individual values of power dissipated in each part of the circuit
C) total voltage divided by the total resistance
D) total resistance times the total current

Question 23

In a series circuit, the resistor with the largest resistance value dissipates

A) the most power
B) the least power
C) no power
D) power equal to current times the resistance

Question 24

Series-opposing voltages are

A) added
B) subtracted
C) never used
D) used with amplifiers only

Question 25

If two series-opposing voltages are equal, the current is

A) equal to voltage divided by the power rating
B) maximum
C) zero
D) equal to the voltage value of one of the voltages divided by the resistance

Question 26

A common application of series circuits is to use a resistance to

A) drop the voltage from the source to a lower value
B) increase the voltage
C) increase the power rating
D) decrease the power rating

Question 27

In most electronic systems, one side of the voltage source is connected to

A) a circuit breaker
B) ground
C) an antenna
D) voltage divider

Question 28

When the resistance between each ground or common point is infinite ohms, it is said to be

A) grounded
B) bonded
C) electrically isolated
D) optically coupled

Question 29

When a circuit has a ground as a common return, voltages are generally measured

A) with respect to this ground
B) from negative to positive
C) with an ammeter
D) from the same side of the power source

Question 30

For a series circuit, a break in the current path means ________ current in all components.

A) decreasing
B) increasing
C) zero
D) none of these are correct

Question 31

The resistance of a short circuit is assumed to be ________ ohms.

A) 0
B) 1
C) 2
D) none of these are correct

Question 32

In a series circuit containing an open, all the good components will have a voltage of ________ volts.

A) 0
B) 1
C) 2
D) none of these are correct

Question 33

Since there is only one path for electrons to follow, the voltage must be the same in all parts of a series circuit.

Question 34

An electric current is a movement of charges between two points, produced by the applied voltage.

Question 35

Series components can be defined as those in the same current path.

Question 36

The total resistance of a series string equals the sum of the individual resistances.

Question 37

The IR voltage across each series connected resistor is called an IR drop, or voltage drop.

Question 38

With no current through a resistor, there is a potential difference across the two ends of the resistor.

Question 39

Kirchhoff's voltage law states that the sum of all resistor voltage drops in a series circuit equals the voltage drop of any one of the voltage drops.

Question 40

When a voltage drop exists across a resistance, one end must be either more positive or more negative than the other end.

Question 41

If a circuit has only two series-opposing voltages and they are equal, the current will be zero.

Question 42

A common application of series circuits is to use a resistance to increase the voltage from the source V_T to a higher value.

Question 43

In most electrical and electronic systems, both sides of the voltage source are connected to ground.

Question 44

The term electrically isolated means that the resistance between each ground or common point is infinite ohms.

Question 45

Generally, schematics show only the value and polarity of a voltage source with respect to ground.