Skip to content

Study the circuit and… (Class 10 Science SQP 2025-26, Q34B)

questionbuddy.in/q/cbse-10-science-2025-26-sqp-q34b-circuit-out

ScienceCBSE Class 10 · Sample paper, session 2025-26 · 2 marks · Case-based

CBSE Class 10 Science sample paper 2025-26: question 34(B)

From the official CBSE sample question paper for 2025-26, section C, question 34(B), for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q34(B) · 2 marks · Case-basedCompetency-basedElectricity

Study the circuit and find out-

  1. (i)

    Current in 12 ohm resistor.

    1 mark
  2. (ii)

    Difference in the readings of ammeter A1 and A2 if any.

    1 mark

Figure in the paper: Circuit: a 6 V battery with a 12 Ω resistor in series. Two 24 Ω resistors are connected in parallel between two junctions, with ammeter A1 in series on the right side of the parallel combination, and ammeter A2 in the lower wire in series with the battery. See it in the official paper.

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2025-26.

Hints

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

Hint 1

Combine the two 24 Ω resistors first.

Hint 2

In a series path, is the current different at different points?

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. (i) Parallel part:

  2. Total resistance . Then A. The 12 Ω resistor is in series with the battery, so the current in it is 0.25 A.

    1 mark

  3. (ii) Both A₁ and A₂ are in the main (series) line, and current is the same everywhere in a series path. So they show the same reading (0.25 A) and there is no difference.

    1 mark

Answer: (i) 0.25 A; (ii) No difference, A₁ and A₂ read the same

Where the marks are

  • R_p = 12 Ω, R_T = 24 Ω, I = 0.25 A (1 mark)
  • Same readings of A₁ and A₂ (1 mark)

Revise the chapter

  • Chapter: Electricity (notes, formulas, where marks are lost and every past question)
  • Topic: Ohm's Law
Practise this chapterBoard-style questions from Electricity, one at a time, marked against the answer key and marking points.Back to the full paperSample paper 2025-26: 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.