Skip to content

Answer the following. (Class 10 Science 2026, Q34)

questionbuddy.in/q/cbse-10-science-2026-31-4-1-q34

ScienceCBSE Class 10 · Board exam 2026, set 31/4/1 · 2 marks · Very short answer

CBSE Class 10 Science 2026: question 34

Set in the CBSE Class 10 board exam of 2026, paper 31/4/1, section C, question 34, for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q34 · 2 marks · Very short answerElectricity

Answer the following.

  1. (a)

    Define volt, the unit of potential difference.

    0 marks
  2. (b)

    Calculate the work done required to move an electron between two points A and B located at a potential difference of 100 V in an electric field.

    0 marks

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 31/4/1.

Hints

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

Hint 1

Potential difference is the work done per unit charge.

Hint 2

Use the charge on one electron, C, in .

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. (a) One volt is the potential difference between two points in a current-carrying conductor when 1 joule of work is done to move a charge of 1 coulomb from one point to the other. So .

    1 mark

  2. (b) Using , so . The charge on an electron is C and V.

    ½ mark

  3. ½ mark

Answer: (a) 1 V = 1 J/1 C. (b) W = J.

Where the marks are

  • Defines one volt correctly (1 mark)
  • Writes with the electron's charge (½ mark)
  • Obtains J (½ 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 paper2026 board paper, set 31/4/1: 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.