Parallel Circuits(Electrical Engineering ) Questions and Answers

Question 1. 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
  1.    12.5 Ω
  2.    200 Ω
  3.    20 kΩ
  4.    50 Ω
Explanation:-
Answer: Option C. -> 20 kΩ
Question 2. A sudden increase in the total current into a parallel circuit may indicate
  1.    A drop in source voltage
  2.    An open resistor
  3.    An increase in source voltage
  4.    Either a drop in source voltage or an open resistor
Explanation:-
Answer: Option C. -> An increase in source voltage
Question 3. When a 1.6 kΩ resistor and a 120 Ω resistor are connected in parallel, the total resistance is
  1.    Greater than 1.6 kΩ
  2.    Greater than 120 Ω but less than 1.6 kΩ
  3.    Less than 120 Ω but greater than 100 Ω
  4.    Less than 100 Ω
Explanation:-
Answer: Option C. -> Less than 120 Ω but greater than 100 Ω
Question 4. Five 100 Ω resistors are connected in parallel. If one resistor is removed, the total resistance is
  1.    25 Ω
  2.    500 Ω
  3.    100 Ω
  4.    20 Ω
Explanation:-
Answer: Option A. -> 25 Ω
Question 5. In a parallel circuit, the branch with the lowest resistance has the most current.
  1.    True
  2.    False
Explanation:-
Answer: Option A. -> True
Question 6. Six resistors are in parallel. The two lowest-value resistors are both 1.2 kΩ. The total resistance
  1.    Is less than 6 kΩ
  2.    Is greater than 1.2 kΩ
  3.    Is less than 1.2 kΩ
  4.    Is less than 600 Ω
Explanation:-
Answer: Option D. -> Is less than 600 Ω
Question 7. A set of Christmas tree lights is connected in parallel across a 110 V source. The filament of each light bulb is 1.8 kΩ. The current through each bulb is approximately
  1.    610 mA
  2.    18 mA
  3.    110 mA
  4.    61 mA
Explanation:-
Answer: Option D. -> 61 mA
Question 8. Five light bulbs are connected in parallel across 110 V. Each bulb is rated at 200 W. The current through each bulb is approximately
  1.    2.2 A
  2.    137 mA
  3.    1.8 A
  4.    9.09 A
Explanation:-
Answer: Option C. -> 1.8 A
Question 9. The total resistance of a parallel circuit is 50 Ω. If the total current is 120 mA, the current through the 270 Ω resistor that makes up part of the parallel circuit is approximately
  1.    22 mA
  2.    120 mA
  3.    220 mA
  4.    50 mA
Explanation:-
Answer: Option A. -> 22 mA
Question 10. A set of Christmas tree lights is connected in parallel across a 110 V source. The filament of each light bulb is 1.8 k. The current through each bulb is approximately
  1.    610 mA
  2.    18 mA
  3.    110 mA
  4.    61 mA
Explanation:-
Answer: Option D. -> 61 mA
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