10th Physics Chapter 4: Electrostatics
| Sr # | Questions | A | B | C | D |
|---|---|---|---|---|---|
| 1 | Lightning occurs due to the discharge of static electricity between: | Clouds and the ground | Metal objects and the ground | Positive and negative charges within a cloud | Lightning rods and buildings | 2 | Electric field lines: | Start from positive charges and end at negative charges | Start from negative charges and end at positive charges | Start from negative charges and end at positive charges | Do not exist in a vacuum | 3 | When capacitors are connected in parallel, the total capacitance is: | Equal to the sum of individual capacitances | Less than the capacitance of the smallest capacitor | Greater than the capacitance of the largest capacitor | Equal to the product of individual capacitances | 4 | The SI unit of electric potential is: | Joule | Volt | Newton | Coulomb | 5 | 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 | 6 | 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 | 7 | Which of the following materials is commonly used as a dielectric in capacitors? | Aluminum | Copper | Glass | Plastic | 8 | A capacitor stores electric charge by: | Converting charge into magnetic energy | Converting charge into gravitational energy | Creating an electric field between its plates | Converting charge into kinetic energy | 9 | Electro painting is a process used for: | Removing rust from metal surfaces | Applying a protective coating on surfaces using electric charges | Generating electricity from electrochemical reactions | Extracting dust particles from air | 10 | What is the SI unit of electric field intensity? | Coulomb | Volt | Tesla | Newton per Coulomb | 11 | Which of the following particles carries a negative electric charge? | Proton | Neutron | Electron | Positron | 12 | 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 |