Electric Charges and Fields - Coulomb's Law
Physics · Grade 12 · Week 1 · 25 questions
In CBSE Grade 12 physics, Electric Charges and Fields is a heavyweight chapter dealing with Coulomb's Law. Expect at least one long-answer (5-mark) question from this chapter on the board paper almost every year.
What you'll practise
- State and apply Coulomb's Law
- Master the key derivations and worked examples from NCERT for electric charges and fields
- Solve CBSE board-pattern problems from electric charges and fields including NCERT exemplar-level questions
All 25 questions in this Electric Charges and Fields - Coulomb's Law quiz
Grade 12 Physics — Electric Charges and Fields - Coulomb's Law: 25 practice questions with instant scoring and explanations.
- SI unit of electric charge
- If distance doubled, force becomes
- Two 2C and 3C at 0.5m. F=? (k=9×10⁹)
- Two identical charges repel 10N at 1m
- Charges doubled, distance halved, F becomes
- Coulomb constant k =
- 5μC and -3μC at 2m
- Three charges, zero force on middle
- Superposition principle
- +q,-q at 2d, force on +Q at center
- What is the SI unit of Coulomb's constant k?
- Two 1C at 1m repel
- Coulomb's law applies to
- Spheres +4μC,-2μC touch, separate 3m
- Two protons 1Å apart
- Force in medium vs vacuum
- Two electrons placed at any distance in vacuum will:
- +q,-q,+q,-q at square corners
- Distance 3×, force becomes
- The dimensional formula of Coulomb's constant k is:
- q and r doubled, F becomes
- +2C and +3C at 1m repel
- Force varies as
- Coulomb force is
- Coulomb constant called
Question 1 of 250 correct so far