Q1. § 11.4 OHM'S LAW § 11.6.2 Resistors in Parallel § 11.8 ELECTRIC POWER
Answer the following : Define volt, the unit of potential difference.
Previously asked in CBSE board exam
2026 31/4/1 Q34 (a)
Generated by claude-sonnet-4-6 · 2026-06-15 06:41 · grounding rag
Model Answer
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.
$$1 \text{ V} = \frac{1 \text{ J}}{1 \text{ C}}$$
Source: Chapter 11, Section 11.2 – Electric Potential and Potential Difference
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Explanation
- This is a standard 1-mark definition; one crisp sentence plus the formula is sufficient.
- Examiners expect the three key terms: 1 joule of work, 1 coulomb of charge, and two points in a conductor. Missing any one of these can cost marks.
- The formula $1\text{ V} = 1\text{ J C}^{-1}$ adds precision and is appreciated in board answers.
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