Question 1

If eight 47 kΩ resistors are connected in parallel across a 25 V source, RT equals .

Accepted Answer

A) 6.71 kΩ 
B) 5.88 kΩ 
C) 376 kΩ 
D) 4.7 kΩ 
A) 6.71 kΩ 
B) 5.88 kΩ 
C) 376 kΩ 
D) 4.7 kΩ B

Question 2

To measure the current through one branch of a parallel circuit, the meter is connected .

Accepted Answer

A) in series with the source 
B) in series with the branch resistor 
C) in parallel with the branch resistor 
D) across the source 
A) in series with the source 
B) in series with the branch resistor 
C) in parallel with the branch resistor 
D) across the source B

Question 3

If one branch of a parallel circuit opens, the total resistance decreases.

Accepted Answer

A) True 
 B)False  False

Question 4

PR1 = 0.25 W and PR2 = 1.2 W in a parallel circuit. The total power dissipated is 1.25 W.

Accepted Answer

A) True 
 B)False

Question 5

-To accurately measure the total current for this circuit, how must the ammeter be connected?

Accepted Answer

A) between the positive terminal and the fuse 
B) between R1 and the fuse 
C) between the negative terminal and the supply and ground 
D) either A or C 
A) between the positive terminal and the fuse 
B) between R1 and the fuse 
C) between the negative terminal and the supply and ground 
D) either A or C

Question 6

If one resistor opens in a parallel circuit, the total circuit resistance and the total circuit current .

Accepted Answer

A) increases, increases 
B) decreases, decreases 
C) increases, decreases 
D) decreases, increases 
A) increases, increases 
B) decreases, decreases 
C) increases, decreases 
D) decreases, increases

Question 7

The most popular application for a parallel circuit in electronics is as a:

Accepted Answer

A) current divider. 
B) resistance divider. 
C) power divider. 
D) voltage divider. 
A) current divider. 
B) resistance divider. 
C) power divider. 
D) voltage divider.

Question 8

As resistors are disconnected from a parallel circuit, .

Accepted Answer

A) IT increases and RT increases 
B) IT increases and RT decreases 
C) IT decreases and RT increases 
D) IT decreases and RT decreases 
A) IT increases and RT increases 
B) IT increases and RT decreases 
C) IT decreases and RT increases 
D) IT decreases and RT decreases

Question 9

If one resistor shorts in a parallel circuit, the total current .

Accepted Answer

A) increases 
B) decreases 
C) equals 0 A 
D) decreases momentarily, then returns to the original value 
A) increases 
B) decreases 
C) equals 0 A 
D) decreases momentarily, then returns to the original value

Question 10

As additional branch resistors are connected in a parallel circuit, .

Accepted Answer

A) IT increases and RT increases 
B) IT increases and RT decreases 
C) IT decreases and RT increases 
D) IT decreases and RT decreases 
A) IT increases and RT increases 
B) IT increases and RT decreases 
C) IT decreases and RT increases 
D) IT decreases and RT decreases

Question 11

If one resistor opens in a parallel circuit, the total current .

Accepted Answer

A) varies wildly 
B) decreases 
C) remains unchanged 
D) increases 
A) varies wildly 
B) decreases 
C) remains unchanged 
D) increases

Question 12

The total resistance of four resistors in parallel is always less than the smallest resistance.

Accepted Answer

A) True 
 B)False

Question 13

If the total current equals 0 A in a four -branch parallel circuit, the trouble is that .

Accepted Answer

A) three of the resistors have opened 
B) the power supply is off 
C) one of the resistors has shorted 
D) one resistor has opened 
A) three of the resistors have opened 
B) the power supply is off 
C) one of the resistors has shorted 
D) one resistor has opened

Question 14

If the power dissipation in each of four parallel branches is 1 W, PT equals .

Accepted Answer

A) 0 W 
B) 4 W 
C) 1 W 
D) 0.25 W 
A) 0 W 
B) 4 W 
C) 1 W 
D) 0.25 W

Question 15

RT = 330 Ω and R1 = 470 Ω in a two -branch parallel circuit. What is the value of R2?

Accepted Answer

A) 110 Ω 
B) 770 Ω 
C) 1108 Ω 
D) 194 Ω 
A) 110 Ω 
B) 770 Ω 
C) 1108 Ω 
D) 194 Ω

Question 16

Total power for a parallel circuit can be determined by the same method as a series circuit.

Accepted Answer

A) True 
 B)False

Question 17

A 5.2 MΩ resistor, 1.2 MΩ resistor and 1 MΩ resistor are connected in parallel across a 15 V source. What is the total current if the 1.2 MΩ resistor opens?

Accepted Answer

A) 17.9 µA 
B) 12.5 µA 
C) 2.88 µA 
D) 2.41 µA 
A) 17.9 µA 
B) 12.5 µA 
C) 2.88 µA 
D) 2.41 µA

Question 18

In a three -branch parallel circuit, R1 = 1.2 MΩ, R2 = 1 MΩ and RT = 0.5 MΩ. Calculate R3.

Accepted Answer

A) 7.7 MΩ 
B) 2 MΩ 
C) 1.7 MΩ 
D) 6 MΩ 
A) 7.7 MΩ 
B) 2 MΩ 
C) 1.7 MΩ 
D) 6 MΩ

Question 19

If a 500 Ω, 1200 Ω and 10 kΩ resistor are connected in parallel across a 25 V source, how much current flows through the 1200 Ω resistor?

Accepted Answer

A) 20.8 mA 
B) 50 mA 
C) 2.4 mA 
D) 2.5 mA 
A) 20.8 mA 
B) 50 mA 
C) 2.4 mA 
D) 2.5 mA

Question 20

The total resistance of a three -branch parallel circuit is 76.92 Ω. If R1 = 100 Ω and R2 = 500 Ω, what is the value of R3?

Accepted Answer

A) 1850 Ω 
B) 1000 Ω 
C) 140 Ω 
D) More information is needed to calculate R3. 
A) 1850 Ω 
B) 1000 Ω 
C) 140 Ω 
D) More information is needed to calculate R3.

If eight 47 kΩ resistors are connected in parallel across a 25 V source, RT equals .

To measure the current through one branch of a parallel circuit, the meter is connected .

If one branch of a parallel circuit opens, the total resistance decreases.

PR1 = 0.25 W and PR2 = 1.2 W in a parallel circuit. The total power dissipated is 1.25 W.

-To accurately measure the total current for this circuit, how must the ammeter be connected?

If one resistor opens in a parallel circuit, the total circuit resistance and the total circuit current .

The most popular application for a parallel circuit in electronics is as a:

As resistors are disconnected from a parallel circuit, .

If one resistor shorts in a parallel circuit, the total current .

As additional branch resistors are connected in a parallel circuit, .

If one resistor opens in a parallel circuit, the total current .

The total resistance of four resistors in parallel is always less than the smallest resistance.

If the total current equals 0 A in a four -branch parallel circuit, the trouble is that .

If the power dissipation in each of four parallel branches is 1 W, PT equals .

RT = 330 Ω and R1 = 470 Ω in a two -branch parallel circuit. What is the value of R2?

Total power for a parallel circuit can be determined by the same method as a series circuit.

A 5.2 MΩ resistor, 1.2 MΩ resistor and 1 MΩ resistor are connected in parallel across a 15 V source. What is the total current if the 1.2 MΩ resistor opens?

In a three -branch parallel circuit, R1 = 1.2 MΩ, R2 = 1 MΩ and RT = 0.5 MΩ. Calculate R3.

If a 500 Ω, 1200 Ω and 10 kΩ resistor are connected in parallel across a 25 V source, how much current flows through the 1200 Ω resistor?

The total resistance of a three -branch parallel circuit is 76.92 Ω. If R1 = 100 Ω and R2 = 500 Ω, what is the value of R3?

Systems, Quantities, and Units

Voltage, Current, and Resistance

Ohms Law, Energy, and Power

Series Circuits

Series-Parallel Circuits

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Rccircuits

Inductors

Rlcircuits

Rlccircuits and Resonance

Transformers

Time Response of Reactive Circuits

Filters

Exam 5: Parallel Circuits

If eight 47 kΩ resistors are connected in parallel across a 25 V source, RT equals .

To measure the current through one branch of a parallel circuit, the meter is connected .

If one branch of a parallel circuit opens, the total resistance decreases.

PR1 = 0.25 W and PR2 = 1.2 W in a parallel circuit. The total power dissipated is 1.25 W.

-To accurately measure the total current for this circuit, how must the ammeter be connected?

If one resistor opens in a parallel circuit, the total circuit resistance and the total circuit current .

The most popular application for a parallel circuit in electronics is as a:

As resistors are disconnected from a parallel circuit, .

If one resistor shorts in a parallel circuit, the total current .

As additional branch resistors are connected in a parallel circuit, .

If one resistor opens in a parallel circuit, the total current .

The total resistance of four resistors in parallel is always less than the smallest resistance.

If the total current equals 0 A in a four -branch parallel circuit, the trouble is that .

If the power dissipation in each of four parallel branches is 1 W, PT equals .

RT = 330 Ω and R1 = 470 Ω in a two -branch parallel circuit. What is the value of R2?

Total power for a parallel circuit can be determined by the same method as a series circuit.

A 5.2 MΩ resistor, 1.2 MΩ resistor and 1 MΩ resistor are connected in parallel across a 15 V source. What is the total current if the 1.2 MΩ resistor opens?

In a three -branch parallel circuit, R1 = 1.2 MΩ, R2 = 1 MΩ and RT = 0.5 MΩ. Calculate R3.

If a 500 Ω, 1200 Ω and 10 kΩ resistor are connected in parallel across a 25 V source, how much current flows through the 1200 Ω resistor?

The total resistance of a three -branch parallel circuit is 76.92 Ω. If R1 = 100 Ω and R2 = 500 Ω, what is the value of R3?

Systems, Quantities, and Units

Voltage, Current, and Resistance

Ohms Law, Energy, and Power

Series Circuits

Series-Parallel Circuits

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Rccircuits

Inductors

Rlcircuits

Rlccircuits and Resonance

Transformers

Time Response of Reactive Circuits

Filters