MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
In the circuit given below, identify the lamp (L1, L2, L3 and L4) whose failure would not interrupt the power supply to the other lamps. (a) L1 (b) L2 (c) L3 (d) L4
Topic: Series and parallel paths
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Answer
Exam answer
(b) L₂.
Explanation
L₂ is on a separate parallel branch. If it fails, the other conducting path remains complete.
More from Current Electricity
The correct formula to calculate the equivalent resistance of two resistors R₁ and R₂ when connected in parallel, is:
(a) (R₁ + R₂) / (R₁R₂)
(b) (R₁R₂) / (R₁ + R₂)
(c) (R₁ − R₂) / (R₁R₂)
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