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IQ-26-029 · Weekly MCQ test — Electrostatics
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| # | Question | Answer | Marks |
|---|---|---|---|
| 1 | Electric field intensity at a point is the force per unit: | B. Positive test charge | 1 / 1 |
| 2 | According to Gauss's law, the electric flux through a closed surface depends on: | D. The charge enclosed by the surface | 2 / 2 |
| 3 | The potential gradient at a point in an electric field is equal to: | A. The negative of the electric field intensity | 1 / 1 |
| 4 | If the distance between two point charges is doubled, the Coulomb force between them becomes: | C. One-fourth | 1 / 1 |
| 5 | One electron volt (1 eV) is equal to: | D. 1.6 × 10⁻¹⁹ J | 1 / 1 |
| 6 | The capacitance of a parallel-plate capacitor increases when: | D. A dielectric is placed between the plates | 2 / 2 |
| 7 | What is the SI unit of electric charge? | A. Coulomb | 1 / 1 |
| 8 | The time constant of a series RC circuit is: | A. RC | 1 / 1 |
Chose B — Positive test charge
Chose D — The charge enclosed by the surface
Chose A — The negative of the electric field intensity
Chose C — One-fourth
Chose D — 1.6 × 10⁻¹⁹ J
Chose D — A dielectric is placed between the plates
Chose A — Coulomb
Chose A — RC