Q.1
The power dissipation in each of four parallel branches is 1.2 W. The total power dissipation is
  • 1.2 W
  • 4.8 W
  • 0.3 W
  • 12 W
Q.2
Four resistors of equal value are connected in parallel. If the total voltage isV and the total resistance isΩ, the current through each parallel resistor is
  • 25 mA
  • 100 mA
  • 6.25 mA
  • 200 mA
Q.3
Three lights are connected in parallel across avolt source. If one light burns out,
  • The remaining two will glow dimmer
  • The remaining two will glow brighter
  • The remaining two will not light
  • The remaining two will glow with the same brightness as before
Q.4
The following currents are measured in the same direction in a three-branch parallel circuit:mA,mA, andmA. The value of the current into the junction of these branches is
  • 200 mA
  • 540 mA
  • 1.24 A
  • 900 mA
Q.5
Four resistors are connected in parallel. Fifteen mA flows through resistor R. If the second resistor is 2R, the third resistor 3R, and the fourth resistor 4R, the total current in the circuit is
  • 60 mA
  • 15 mA
  • 135 mA
  • 31.25 mA
Q.6
Total power in a parallel circuit is found by adding up the power of all the individual resistors.
  • True
  • False
Q.7
In a certain three-branch parallel circuit, R1 hasmA through it, R2 hasmA through it, and R3 hasmA through it. After measuring a total ofmA, you can say that
  • R3 is open
  • R1 is open
  • R2 is open
  • The circuit is operating properly
Q.8
In a five-branch parallel circuit, there aremA of current in each branch. If one of the branches opens, the current in each of the other four branches is
  • 48 mA
  • 12 mA
  • 0 A
  • 3 mA
Q.9
Four 8 Ω speakers are connected in parallel to the output of an audio amplifier. If the maximum voltage to the speakers isV, the amplifier must be able to deliver to the speakers
  • 18 W
  • 1.5 W
  • 48 W
  • 72 W
Q.10
AΩ resistor, aΩ resistor, and aΩ resistor are all in parallel. The total resistance is approximately
  • 790 Ω
  • 470 Ω
  • 60 Ω
  • 30 Ω
Q.11
The total resistance for two resistors in parallel is equal to the sum of the two resistors.
  • True
  • False
Q.12
When an open circuit occurs in a parallel branch, the total resistance decreases.
  • True
  • False
Q.13
Addition of resistors in parallel increases total resistance and decreases total current.
  • True
  • False
Q.14
The total current divides among parallel resistors in a manner directly proportional to the resistance values.
  • True
  • False
Q.15
There is a total ofmA of current into four parallel resistors. The currents through three of the resistors aremA,mA, andmA. The current through the fourth resistor is
  • 490 mA
  • 800 mA
  • 310 mA
  • 0 A
Q.16
Four equal-value resistors are connected in parallel. Ten volts are applied across the parallel circuit and 2 mA are measured from the source. The value of each resistor is
  • 12.5 Ω
  • 200 Ω
  • 20 kΩ
  • 50 Ω
Q.17
A sudden increase in the total current into a parallel circuit may indicate
  • A drop in source voltage
  • An open resistor
  • An increase in source voltage
  • Either a drop in source voltage or an open resistor
Q.18
In a parallel circuit, the branch with the lowest resistance has the most current.
  • True
  • False
Q.19
When a 1.6 kΩ resistor and aΩ resistor are connected in parallel, the total resistance is
  • Greater than 1.6 kΩ
  • Greater than 120 Ω but less than 1.6 kΩ
  • Less than 120 Ω but greater than 100 Ω
  • Less than 100 Ω
Q.20
FiveΩ resistors are connected in parallel. If one resistor is removed, the total resistance is
  • 25 Ω
  • 500 Ω
  • 100 Ω
  • 20 Ω
Q.21

Five light bulbs are connected in parallel acrossV. Each bulb is rated atW. The current through each bulb is approximately

  • 2.2 A
  • 137 mA
  • 1.8 A
  • 9.09 A
Q.22

Five light bulbs are connected in parallel acrossV. Each bulb is rated atW. The current through each bulb is approximately

  • 2.2 A
  • 137 mA
  • 1.8 A
  • 9.09 A
Q.23
Five light bulbs are connected in parallel acrossV. Each bulb is rated atW. The current through each bulb is approximately
  • 2.2 A
  • 137 mA
  • 1.8 A
  • 9.09 A
Q.24
The total resistance of a parallel circuit isΩ. If the total current ismA, the current through theΩ resistor that makes up part of the parallel circuit is approximately
  • 22 mA
  • 120 mA
  • 220 mA
  • 50 mA
Q.25
The following resistors are in parallel across a voltage source:Ω,Ω, andΩ. The resistor with the least current is
  • 220 Ω
  • 470 Ω
  • 560 Ω
  • Impossible to determine without knowing the voltage
Q.26
An ammeter has an internal resistance ofΩ. The meter movement itself can handle up to 1 mA. IfmA is applied to the meter, the shunt resistor, RSHis approximately
  • 55 Ω
  • 5.5 Ω
  • 50 Ω
  • 9 Ω
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