Parallel Circuits

Q1:
Which component is of the wrong value?

mcq4_1013_1.gif

A R1

B R2

C R3

D R4

Q2:
The voltage read by the voltmeter will be:

mcq4_1005_1.gif

A
24 V

B
12 V

C
6 V

D
4 V

Q3: If a 1 k and a 2 k resistor are parallel-connected across a 12 V supply, how much current is received by the 2 k resistor?

A 4 mA

B 6 mA

C 8 mA

D 12 mA

Q4:
Which component is of the wrong value?

mcq4_1013_1.gif

A R1

B R2

C R3

D R4

Q5: Components that connect in parallel form:

A branches

B open circuits

C short circuits

D a voltage divider

Q6:
What does P2 equal in the given circuit?

A 45 mW

B 405 mW

C 450 mW

D 900 mW

Q7:
What does VS equal in the given circuit?

A 0 V

B 9 V

C 27 V

D More information is needed to find VS.

Q8: What is RT for fifteen 2 M resistors all connected in parallel?

A
133 k

B
300 k

C
750 k

D
30 M

Q9:
What is the total resistance?

mcq4_1010_1.gif

A
1.045 k

B
1.545 k

C
2.045 k

D
2.545 k

Q10: Which are the better test devices used to isolate a suspected open component within a parallel circuit?

A a voltmeter or an ohmmeter

B neither an ammeter nor a voltmeter

C a wattmeter or a voltmeter

D an ammeter or an ohmmeter

Q11: In a parallel resistive circuit:

A there is more than one current path between two points

B the voltage applied divides between the branches

C the total branch power exceeds the source power

D the total circuit conductance is less than the smallest branch conductance

Q12: If 550 mA of current leaves a node that had 250 mA entering from one branch, how much current would enter from the other?

A 250 mA

B 300 mA

C 550 mA

D 800 mA

Q13:
What is the total resistance?

mcq4_1007_1.gif

A
7 k

B
1 k

C
706

D
353

Q14:
The voltage read by the voltmeter will be:

mcq4_1005_1.gif

A 24 V

B 12 V

C 6 V

D 4 V

Q15: What is the total power loss if 2 k and 1 k parallel-connected resistors have an IT of 3 mA?

A
6 W

B
36 W

C
6 mW

D
36 mW

Q16:
What does I3 equal in the given circuit?

A 5 mA

B 45 mA

C 50 mA

D 100 mA

Q17:
What does RT equal in the given circuit?

A
90 omega.gif

B
180 omega.gif

C
200 omega.gif

D
1.8 komega.gif

Q18:
What is RT for a 12 k, a 4 k, and a 3 k resistor in parallel?

A
1.5 k

B
2 k

C
6.3 k

D
19 k

Q19: If a 1 k and a 2 k resistor are parallel-connected across a 12 V supply, how much current is received by the 2 k resistor?

A 4 mA

B 6 mA

C 8 mA

D 12 mA

Q20:
The current through R1 will be:

mcq4_1006_1.gif

A 128 mA

B 88 mA

C 48 mA

D 2.2 mA

Q21: When a parallel 5 k resistor and a 25 k resistor have a 10 V supply, what is the total power loss?

A 2.4 mW

B 3.3 mW

C 24 mW

D 33 mW

Q22: Which is considered to be the common reference for a parallel circuit?

A Voltage

B Current

C Power

D Resistance

Q23: When parallel resistors are of three different values, which has the greatest power loss?

A The smallest resistance

B The largest resistance

C They have the same power loss.

D Voltage and resistance values are needed.

Q24: What procedure should be followed when troubleshooting with an ammeter or voltmeter?

A Short the leads and adjust.

B Check the meter’s external power supply.

C Start with the highest scale and adjust down to a lower scale.

D Start with the lowest scale and adjust up to a higher scale.

Q25: What is the total resistance of four 1 k parallel-connected resistors?

A 200 ohms

B 250 ohms

C 400 ohms

D 4 kilohms

Q26:
What would these meter readings indicate about the circuit in the given circuit?Meter Readings: I = 10 mA, V = 12 V

A <div class="flex-wrap"><i>R</i><sub>1</sub> is open.</div>

B
R2 is open.

C The fuse is open.

D The circuit is operating normally.

Q27: What are the individual values of two parallel resistors whose RT is 8 ohms, when one has double the resistance of the other?

A 2.7 ohms and 5.3 ohms

B 8 ohms and 16 ohms

C 10 ohms and 20 ohms

D 12 ohms and 24 ohms

Q28: Kirchhoff's current law for parallel circuits states that the:

A sum of all branch voltages equals zero

B total circuit resistance is less than the smallest branch resistor

C sum of currents into a junction is equal to the difference of all the branch currents

D sum of the total currents flowing out of a junction equals the sum of the total currents flowing into that junction

Q29: If two parallel-connected resistors dissipate 6 watts and 10 watts of power, then what is the total power loss?

A 3.75 watts

B 4 watts

C 16 watts

D 60 watts

Q30: A parallel circuit is also used as a divider for:

A conductance

B voltage

C power

D current

Q31:
What would these meter readings indicate about the circuit in the given circuit?Meter Readings: I = 0 mA, V = 0 V

A
R1 is open.

B
R2 is open.

C The fuse is open.

D The circuit is operating normally.

Q32:
What is the total power of the circuit?

mcq4_1009_1.gif

A 2.2 W

B 4.2 W

C 6.2 W

D 8.2 W

Q33:
What does R1 equal in the given circuit?

A
90 omega.gif

B
180 omega.gif

C
200 omega.gif

D
1.8 komega.gif

Q34:
Which component is shorted?

mcq4_1012_1.gif

A R1

B R2

C R3

D R4

Q35: What happens to total resistance in a circuit with parallel resistors if one of them opens?

A It increases.

B It halves.

C It remains the same.

D It decreases.

Q36:
In the given circuit, Channel 1 of the stereo amplifier outputs 12 V to the speakers. How much total current is the amplifier providing to the speakers?

A 0 A

B 1.5 A

C 3 A

D More information is needed to find the total current provided to the speakers.

Q37: The voltage across any branch of a parallel circuit:

A varies as the total current varies

B is inversely proportional to total circuit resistance

C is equally applied to all branch conductances

D is dropped in proportion to each branch resistance

Q38:
What would these meter readings indicate about the circuit in the given circuit?Meter Readings: I = 7.6 mA, V = 12 V

A
R1 is open.

B
R2 is open.

C
The fuse is open.

D The circuit is operating normally.

Q39: What is the product-over-sum result of 150 and 6800?

A 150

B 146.7

C 0.006

D 6800

Q40: A parallel circuit differs from a series circuit in that a parallel circuit has

A no path for current flow

B fewer paths for current flow

C one path for current flow

D more than one path for current flow

Q41: The logic gate that will have a LOW output when any one of its inputs is HIGH is the:

A NAND gate

B AND gate

C NOR gate

D OR gate

Q42:
What does I3 equal in the given circuit?

A 5 mA

B 45 mA

C 50 mA

D 100 mA

Q43:
Which component is open?
 
mcq4_1011_1.gif

A R1

B R2

C R3

D R4


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