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IQ-26-030 · Weekly MCQ test — Electrostatics
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| # | Question | Answer | Marks |
|---|---|---|---|
| 1 | The potential gradient at a point in an electric field is equal to: | C. The negative of the electric field intensity | 1 / 1 |
| 2 | The capacitance of a parallel-plate capacitor increases when: | D. A dielectric is placed between the plates | 2 / 2 |
| 3 | Electric field intensity at a point is the force per unit: | D. Positive test charge | 1 / 1 |
| 4 | What is the SI unit of electric charge? | A. Coulomb | 1 / 1 |
| 5 | The time constant of a series RC circuit is: | B. RC | 1 / 1 |
| 6 | According to Gauss's law, the electric flux through a closed surface depends on: | C. The charge enclosed by the surface | 2 / 2 |
| 7 | One electron volt (1 eV) is equal to: | C. 1.6 × 10⁻¹⁹ J | 1 / 1 |
| 8 | If the distance between two point charges is doubled, the Coulomb force between them becomes: | D. Four timesCorrect: B. One-fourth | 0 / 1 |
Chose C — The negative of the electric field intensity
Chose D — A dielectric is placed between the plates
Chose D — Positive test charge
Chose A — Coulomb
Chose B — RC
Chose C — The charge enclosed by the surface
Chose C — 1.6 × 10⁻¹⁹ J
Chose D — Four times