parallel circuits MCQs – Page 2

Practise focused parallel circuits questions with marked answers for exam preparation and subject revision.

parallel circuits Mcqs
21. The currents into a junction flow along two paths. One current is 4 A and the other is 3 A. The total current out of the junction is_____________?
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A. 1:00 AM

B. 7 A

C. the larger of the two

D. unknown

22. The following resistors are in parallel across a voltage source: 220? , 470? , and 560? . The resistor with the least current is______________?
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A. impossible to determine without knowing the voltage

B. 560 ?

C. 220 ?

D. 470 ?

23. Six resistors are in parallel. The two lowest-value resistors are both 1.2 k?. The total resistance______________?
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A. is less than 600 ?

B. is greater than 1.2 k?

C. is less than 1.2 k?

D. is less than 6 k?

24. When an additional resistor is connected across an existing parallel circuit, the total resistance____________?
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A. increases by the value of the added resistor

B. decreases by the value of the added resistor

C. decreases

D. remains the same

25. If one of the resistors in a parallel circuit is removed, the total resistance_____________?
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A. remains the same

B. decreases

C. increases

D. doubles

26. Five light bulbs are connected in parallel across 110 V. Each bulb is rated at 200 W. The current through each bulb is approximately___________?
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A. 2.2 A

B. 9.09 A

C. 137 mA

D. 1.8 A