Parallel Circuits Objective Type Questions and Answers

Questions

21 There is a total of 800 mA of current into four parallel resistors. The currents through three of the resistors are 40 mA, 70 mA, and 200 mA. The current through the fourth resistor is

A 490 mA

B 800 mA

C 310 mA

D 0 A

View Answer

Answer: 490 mA

22 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

A 60 mA

B 15 mA

C 135 mA

D 31.25 mA

View Answer

Answer: 31.25 mA

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23 If one of the resistors in a parallel circuit is removed, the total resistance

A decreases

B increases

C remains the same

D doubles

View Answer

Answer: increases

24 Six resistors are in parallel. The two lowest-value resistors are both 1.2 kΩ. The total resistance

A is less than 6 kΩ

B is greater than 1.2 kΩ

C is less than 1.2 kΩ

D is less than 600 Ω

View Answer

Answer: is less than 600 Ω

25 In a five-branch parallel circuit, there are 12 mA of current in each branch. If one of the branches opens, the current in each of the other four branches is

A 48 mA

B 12 mA

C 0 A

D 3 mA

View Answer

Answer: 12 mA

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