Parallel Circuits Questions and Answers

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Showing 10 of 23 questions
Q1
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.
Answer: Option A
Q2
What is the product-over-sum result of 150 and 6800?
  • A 150
  • B 146.7
  • C 0.006
  • D 6800
Answer: Option B
Q3
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
Answer: Option C
Q4
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
Answer: Option C
Q5
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.
Answer: Option A
Q6
Components that connect in parallel form:
  • A branches
  • B open circuits
  • C short circuits
  • D a voltage divider
Answer: Option A
Q7
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
Answer: Option D
Q8
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
Answer: Option C
Q9
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
  • 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
Answer: Option D
Q10
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
Answer: Option B

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