STEM QUIZ

 1. Electrostatics

• Coulomb’s Law, Electric Force, and Field Lines
• Electric Dipoles and Gauss’s Law (Flux)
• Electric Potential, Potential Energy, and Equipotential Surfaces
• Capacitors, Dielectrics, and Energy Storage

2. Current Electricity

• Ohm’s Law, Electrical Resistance, and Resistivity
• Drift Velocity and Current Density
• Kirchhoff’s Rules (Loop and Junction) and Circuit Analysis
• Combination of Resistors (Series and Parallel)
• Electrical Power and Energy

3. Magnetism

• Magnetic Field Laws (Biot-Savart and Ampere’s Law)
• Lorentz Force (Force on Moving Charges and Current-Carrying Conductors)
• Magnetic Dipole Moment and Earth’s Magnetic Field
• Magnetic Properties of Materials (Paramagnetic, Diamagnetic, Ferromagnetic)

4. Electromagnetic Induction & Alternating Current (AC)

• Faraday’s Laws of Induction and Lenz’s Law
• Magnetic Flux, Motional EMF, and Inductance (Self and Mutual)
• AC Circuits: RMS/Peak Values, LCR Circuits, and Resonance
• Transformers and Their Working Principle

5. Electromagnetic Waves

• Nature, Production, and Speed of EM Waves
• The Electromagnetic Spectrum and Applications

6. Optics

• Ray Optics: Reflection, Refraction, Total Internal Reflection (Optical Fibers), and Optical Instruments (Microscopes, Telescopes)
• Wave Optics: Interference (Young’s Double Slit), Diffraction, and Polarization

7. Dual Nature of Radiation

• Photoelectric Effect and Stopping Potential
• Wave Nature of Particles (de Broglie Hypothesis)

8. Atoms and Nuclei

• Atomic Models (Rutherford and Bohr)
• Hydrogen Emission Spectrum
• Mass Defect, Binding Energy, and Nuclear Stability
• Radioactivity (Alpha, Beta, Gamma Decay) and Nuclear Reactions (Fission/Fusion)

9. Electronic Devices

• Semiconductor Physics (Intrinsic/Extrinsic)
• P-N Junction Formation and Biasing (Forward/Reverse)
• Semiconductor Diodes