Which of the two arrangements shown has the equivalent … · 2008-07-25 · Which of the two...

Which of the twoarrangements shown has thesmaller equivalent resistancebetween points a and b?

Q26.1

A. the series arrangement

B. the parallel arrangement

C. The equivalent resistanceis the same for botharrangements.

D. The answer depends onthe values of the individualresistances R1, R2, and R3.

Which of the twoarrangements shown has thesmaller equivalent resistancebetween points a and b?

A26.1

A. the series arrangement

B. the parallel arrangement

C. The equivalent resistanceis the same for botharrangements.

D. The answer depends onthe values of the individualresistances R1, R2, and R3.

Q26.2

Three identical resistors,each of resistance R, areconnected as shown. What isthe equivalent resistance ofthis arrangement of threeresistors?

A. 3R

B. 2R

C. 3R/2

D. 2R/3

E. R/3

Three identical resistors,each of resistance R, areconnected as shown. What isthe equivalent resistance ofthis arrangement of threeresistors?

A26.2

A. 3R

B. 2R

C. 3R/2

D. 2R/3

E. R/3

Q26.3

a b

120 V240 W

120 V120 W

120 V60 W

A 120-V, 60-W light bulb, a 120-V, 120-W light bulb, and a 120-V,240-W light bulb are connected inparallel as shown.

The voltage between points a and bis 120 V. Through which bulb isthe largest current?

A. the 120-V, 60-W light bulb

B. the 120-V, 120-W light bulb

C. the 120-V, 240-W light bulb

D. All three light bulbs have the same current.

A26.3

a b

120 V240 W

120 V120 W

120 V60 W

A 120-V, 60-W light bulb, a 120-V, 120-W light bulb, and a 120-V,240-W light bulb are connected inparallel as shown.

The voltage between points a and bis 120 V. Through which bulb isthe largest current?

A. the 120-V, 60-W light bulb

B. the 120-V, 120-W light bulb

C. the 120-V, 240-W light bulb

D. All three light bulbs have the same current.

Q26.4

a b

120 V240 W

120 V120 W

120 V60 W

A 120-V, 60-W light bulb, a 120-V, 120-W light bulb, and a 120-V,240-W light bulb are connected inparallel as shown.

The voltage between points a and bis 120 V. Which bulb has thelowest resistance?

A. the 120-V, 60-W light bulb

B. the 120-V, 120-W light bulb

C. the 120-V, 240-W light bulb

D. All three light bulbs have the same resistance.

A26.4

a b

120 V240 W

120 V120 W

120 V60 W

A 120-V, 60-W light bulb, a 120-V, 120-W light bulb, and a 120-V,240-W light bulb are connected inparallel as shown.

The voltage between points a and bis 120 V. Which bulb has thelowest resistance?

A. the 120-V, 60-W light bulb

B. the 120-V, 120-W light bulb

C. the 120-V, 240-W light bulb

D. All three light bulbs have the same resistance.

A 120-V, 60-W light bulb, a 120-V, 120-Wlight bulb, and a 120-V, 240-W light bulb areconnected in series as shown.

The voltage between points a and b is 120 V.Through which bulb is there the greatestvoltage drop?

Q26.5 a

b

120 V240 W

120 V120 W

120 V60 W

A. the 120-V, 60-W light bulb

B. the 120-V, 120-W light bulb

C. the 120-V, 240-W light bulb

D. All three light bulbs have the same voltage drop.

A26.5

A. the 120-V, 60-W light bulb

B. the 120-V, 120-W light bulb

C. the 120-V, 240-W light bulb

D. All three light bulbs have the same voltage drop.

a

b

120 V240 W

120 V120 W

120 V60 W

A 120-V, 60-W light bulb, a 120-V, 120-Wlight bulb, and a 120-V, 240-W light bulb areconnected in series as shown.

The voltage between points a and b is 120 V.Through which bulb is there the greatestvoltage drop?

A 120-V, 60-W light bulb, a 120-V, 120-Wlight bulb, and a 120-V, 240-W light bulb areconnected in series as shown.

The voltage between points a and b is 120 V.Which bulb glows the brightest?

Q26.6

A. the 120-V, 60-W light bulb

B. the 120-V, 120-W light bulb

C. the 120-V, 240-W light bulb

D. All three light bulbs glow with equal brightness.

a

b

120 V240 W

120 V120 W

120 V60 W

A 120-V, 60-W light bulb, a 120-V, 120-Wlight bulb, and a 120-V, 240-W light bulb areconnected in series as shown.

The voltage between points a and b is 120 V.Which bulb glows the brightest?

A26.6

A. the 120-V, 60-W light bulb

B. the 120-V, 120-W light bulb

C. the 120-V, 240-W light bulb

D. All three light bulbs glow with equal brightness.

a

b

120 V240 W

120 V120 W

120 V60 W

Three identical light bulbs areconnected to a source of emf asshown. If 3 A flows out of theemf, then what is the currentflowing through bulb A?

Q26.7

A. 1A

B. 1.5A

C. 2A

D. 3A

3A

Three identical light bulbs areconnected to a source of emf asshown. If 3 A flows out of theemf, then what is the currentflowing through bulb A?

A26.7

A. 1A

B. 1.5A

C. 2A

D. 3A

3A

What is the potentialdifference between point aand point b? That is what isVa - Vb ?

Q26.8

A. zero

B. 20 V

C. 13 V

D. - 13 V

What is the potentialdifference between point aand point b? That is what isVa - Vb ?

A26.8

A. zero

B. 20 V

C. 13 V

D. - 13 V

What is the value for 2

Q26.9

A. 20 V

B. 13 V

C. -13 V

D. 7 V

What is the value for 2

A26.9

A. 20 V

B. 13 V

C. -13 V

D. 7 V

A battery, a capacitor, and a resistor are connected in series.Which of the following affect(s) the maximum charge storedon the capacitor?

Q26.10

A. the emf of the battery

B. the capacitance C of the capacitor

C. the resistance R of the resistor

D. both and C

E. all three of , C, and R

A battery, a capacitor, and a resistor are connected in series.Which of the following affect(s) the maximum charge storedon the capacitor?

A26.10

A. the emf of the battery

B. the capacitance C of the capacitor

C. the resistance R of the resistor

D. both and C

E. all three of , C, and R

A battery, a capacitor, and a resistor are connected in series.Which of the following affect(s) the rate at which thecapacitor charges?

Q26.11

A. the emf of the battery

B. the capacitance C of the capacitor

C. the resistance R of the resistor

D. both C and R

E. all three of , C, and R

A battery, a capacitor, and a resistor are connected in series.Which of the following affect(s) the rate at which thecapacitor charges?

A26.11

A. the emf of the battery

B. the capacitance C of the capacitor

C. the resistance R of the resistor

D. both C and R

E. all three of , C, and R

After the switch has beenclosed for a long time (timegoes to infinity) what is thecurrent flowing through the15.0 μF?

Q26.12

A. Cannot be determined; toocomplicated.

B. Same current as that going throughthe 75.0 resistor

C. Same current as that going throughthe 25.0 resistor in parallel withit

D. zero

After the switch has beenclosed for a long time (timegoes to infinity) what is thecurrent flowing through the15.0 μF?

A26.12

A. Cannot be determined; toocomplicated.

B. Same current as that going throughthe 75.0 resistor

C. Same current as that going throughthe 25.0 resistor in parallel withit

D. zero