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In domestic electric circuits… (Class 10 Science 2023, Q14)

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ScienceCBSE Class 10 · Board exam 2023, set 31/1/1 · 1 mark · MCQ

CBSE Class 10 Science 2023: question 14

Set in the CBSE Class 10 board exam of 2023, paper 31/1/1, section A, question 14, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q14 · 1 mark · MCQElectricity

In domestic electric circuits the wiring with 15 A current rating is for the electric devices which have

  1. (A)higher power ratings such as geyser.
  2. (B)lower power ratings such as fan.
  3. (C)metallic bodies and low power ratings.
  4. (D)non-metallic bodies and low power ratings.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 31/1/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

Higher power at the same voltage means a larger current ().

Hint 2

Which appliance in the options needs the most power?

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. Domestic wiring has two circuits: 15 A for high-power appliances and 5 A for low-power ones such as fans and bulbs.

  2. A geyser draws a large current, so it is connected to the 15 A line. The answer is (A).

    1 mark

Answer: Option (A)

Where the marks are

  • Chooses higher power ratings such as geyser (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Electricity, one at a time, marked against the answer key and marking points.Back to the full paper2023 board paper, set 31/1/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.