series circuit

When a fourth resistor is connected in series with three resistors, the total resistance

A.increases by one-fourth

B.increases

C.decreases

D.remains the same

View AnswerWorkspaceReportDiscuss in Forum

2.A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors exceptR3. The voltage acrossR3is

A.0 V

B.1.2 V

C.6 V

D.0.6 V


3.A series circuit consists of three resistors with values of 120, 270, and 330. The total resistance is

A.less than 120

B.the average of the values

C.720

D.120


4.A certain series circuit consists of a 1/8 W resistor, a 1/4 W resistor, and a 1/2 W resistor. The total resistance is 1200. If each resistor is operating in the circuit at its maximum power dissipation, total current flow is

A.27 mA

B.2.7 mA

C.19 mA

D.190 mA


5.Which of the following series combinations dissipates the most power when connected across a 120 V source?

A.one 220resistor

B.two 220resistors

C.three 220resistors

D.four 220resistors

View AnswerWorkspaceRep

6. When one of three series resistors is removed from a circuit and the circuit is reconnected, the current

A.increases

B.increases by one-third

C.decreases by one-third

D.decreases by the amount of current through the removed resistor


7.The total power in a certain circuit is 12 W. Each of the four equal-value series resistors making up the circuit dissipates

A.12 W

B.48 W

C.3 W

D.8 W


8.The following resistors (one each) are connected in a series circuit: 470, 680, 1 k, and 1.2 k. The voltage source is 20 V. Current through the 680resistor is approximately

A.60 mA

B.30 mA

C.6 mA

D.300 mA


9.A series circuit consists of a 4.7 k, a 12 k, and a 2.2 kresistor. The resistor that has the most voltage drop is

A.the 12 k

B.the 2.2 k

C.the 4.7 k

D.impossible to determine from the given information


10.All the voltage drops and the source voltage added together in a series circuit is equal to

A.the total of the voltage drops

B.the source voltage

C.zero

D.the total of the source voltage and the voltage drops

11.Two resistors are in series: a 5.6 kresistor and a 4.7 kresistor. The voltage drop across the 5.6 kresistor is 10 V. The voltage across the 4.7 kresistor is

A.8.39 V

B.10 V

C.2.32 V

D.0 V


12.Three 680resistors are connected in series with a 470 V source. Current in the circuit is

A.69 mA

B.230 mA

C.23 mA

D.690 mA


13.There are five resistors in a given series circuit and each resistor has 6 V dropped across it. The source voltage

A.is 6 V

B.depends on the current flow

C.depends on the resistor values

D.is 30 V


14.If a 6 V and a 9 V source are connected series aiding, the total voltage is

A.6 V

B.9 V

C.3 V

D.15 V


15.Five resistors are connected in a series and there is a current of 3 A into the first resistor. The amount of current into the second resistor is

A.3 A

B.1 A

C.4 A

D.0.3 A


Prev12345Next

.16.The total resistance of eight 5.6 kresistors in series is

A.8

B.5,600

C.4,480

D.44,800


17.A series circuit has a 24 V source and a total resistance of 120. The current through each resistor is

A.24 mA

B.200 mA

C.120 mA

D.20 mA


18.To measure the current out of the second resistor in a circuit consisting of four resistors, an ammeter can be placed

A.between the second and third resistors

B.at the negative terminal of the source

C.between the third and fourth resistors

D.at any point in the circuit


19.A 12 V battery is connected across a series combination of 68, 47, 220, and 33. The amount of current is

A.326 mA

B.16.3 mA

C.32.6 mA

D.163 mA


20.If a 24 V and a 6 V battery are series opposing, the total voltage is

A.30 V

B.24 V

C.18 V

D.0 V

21.A series circuit consists of three resistors. Two resistors are 1.2 keach. The total resistance is 12 k. The value of the third resistor

A.is 9,600

B.is 960

C.is 1.2 k

D.cannot be determined


22.Four equal-value resistors are in series with a 12 V battery and 13.63 mA are measured. The value of each resistor is

A.22

B.220

C.880

D.88


23.Two 1.5 V cells are connected series opposing across two 100resistors in series. Total current flow is

A.15 mA

B.5 mA

C.2 mA

D.0 A


24.The total resistance of a circuit is 680. The percentage of the total voltage appearing across a 47resistor that makes up part of the total series resistance is

A.68%B.47%

C.69%D.6.91%


25.Two 6 V batteries are connected series aiding across two 1.2 kresistors in series. Current through each resistor is

A.5 mA

B.10 mA

C.0 A

D.2.5 mA

series circuit

Documents