10th Physics Chapter 4: Electrostatics
| Sr # | Questions | A | B | C | D |
|---|---|---|---|---|---|
| 1 | The spacing between electric field lines indicates: | The strength of the electric field | The number of charges | The type of charges | The magnitude of voltage | 2 | What is a common problem associated with electrostatics in industries? | Decreased efficiency of electric motors | Corrosion of metal surfaces | Accidental fires or explosions | Reduced conductivity of materials | 3 | What is the SI unit of electric field intensity? | Coulomb | Volt | Tesla | Newton per Coulomb | 4 | If the distance between two charges is doubled, what happens to the electric force between them? | It becomes one-fourth | It becomes half | It remains the same | It doubles | 5 | The SI unit of electric potential is: | Joule | Volt | Newton | Coulomb | 6 | Which instrument is used to detect the presence and magnitude of electric charge? | Voltmeter | Ammeter | Electroscope | Galvanometer | 7 | Coulomb’s law states that the force between two charges is: | Directly proportional to the product of their charges and inversely proportional to the square of the distance between them | Inversely proportional to the product of their charges and directly proportional to the square of the distance between them | Directly proportional to the product of their charges and directly proportional to the square of the distance between them | Inversely proportional to the product of their charges and inversely proportional to the square of the distance between them | 8 | A parallel plate capacitor has a capacitance of 10 microfarads. If the distance between the plates is doubled, what will be the new capacitance? | 5 microfarads | 10 microfarads | 20 microfarads | 40 microfarads | 9 | What is the effect of adding a dielectric material between the plates of a capacitor? | Decreases the capacitance | Increases the capacitance | No effect on the capacitance | Changes the polarity of the capacitor | 10 | The phenomenon of static electricity can sometimes lead to: | Increased conductivity of materials | Improved adhesion of surfaces | The formation of sparks causing fires or explosions | Reduction in friction between objects | 11 | An electrostatic precipitator is most commonly used to remove: | Water droplets from air | Dust particles from industrial exhaust gases | Metal ions from solutions | Static charges from materials | 12 | A cylindrical capacitor consists of two concentric cylinders. If the radius of the inner cylinder is doubled while keeping the radius of the outer cylinder constant, what happens to the capacitance? | It doubles | It halves | It quadruples | It remains the same |