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IQ-26-022 · Weekly MCQ test — Electrostatics
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| # | Question | Answer | Marks |
|---|---|---|---|
| 1 | One electron volt (1 eV) is equal to: | A. 1.6 × 10¹⁹ JCorrect: C. 1.6 × 10⁻¹⁹ J | 0 / 1 |
| 2 | If the distance between two point charges is doubled, the Coulomb force between them becomes: | B. Four timesCorrect: A. One-fourth | 0 / 1 |
| 3 | The capacitance of a parallel-plate capacitor increases when: | C. A dielectric is placed between the plates | 2 / 2 |
| 4 | Electric field intensity at a point is the force per unit: | A. Negative chargeCorrect: D. Positive test charge | 0 / 1 |
| 5 | The time constant of a series RC circuit is: | C. R / CCorrect: B. RC | 0 / 1 |
| 6 | According to Gauss's law, the electric flux through a closed surface depends on: | B. The charge enclosed by the surface | 2 / 2 |
| 7 | The potential gradient at a point in an electric field is equal to: | A. The negative of the electric field intensity | 1 / 1 |
| 8 | What is the SI unit of electric charge? | D. VoltCorrect: B. Coulomb | 0 / 1 |
Chose A — 1.6 × 10¹⁹ J
Chose B — Four times
Chose C — A dielectric is placed between the plates
Chose A — Negative charge
Chose C — R / C
Away for 8 s
Chose B — The charge enclosed by the surface
Chose A — The negative of the electric field intensity
Chose D — Volt