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Electronic Systems Thinking and Circuits · Qualifier · 26 Oct 2025 · September 2025 term

Question 14: An ideal 1800 mAh battery is powering a load that draws …

Question 14

+2 marksOne correct option

An ideal 1800 mAh battery is powering a load that draws a constant current of 60 mA. How long will the fully charged battery last before it drains completely?

  1. A

    10 hours

  2. B

    15 hours

  3. C

    40 hours

  4. D

    30 hours

Show answer

Correct answer

  • D

    30 hours

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Question 14 of 20 in the IIT Madras BS Electronic Systems Thinking and Circuits (ESTC) Qualifier paper sat on 26 Oct 2025, in the September 2025 term (IIT M ES QUALIFIER AN EXAM QEQ1 26 Oct). It carries 2 marks.

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