Electrostatics (12 Physics)
Study electric charges, electric fields, and electric potential. Master Coulombs law and its applications.
TL;DR: Study electric charges, electric fields, and electric potential. Master Coulombs law and its applications.
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Study electric charges, electric fields, and electric potential. Master Coulombs law and its applications.
Electrostatics MCQs with Answers & Explanations
Q1. What is electric charge?
- Force on an object
- Property of matter that causes electromagnetic interaction ✓ (correct)
- Energy of a system
- Type of radiation
Q2. What is Coulombs Law?
- F = ma
- F = kq₁q₂/r² ✓ (correct)
- E = mc²
- V = IR
Q3. What is the SI unit of electric charge?
- Joule
- Coulomb ✓ (correct)
- Ampere
- Volt
Q4. What is an electric field?
- Flow of charge
- Region around a charge where force is exerted ✓ (correct)
- Gravitational field
- Magnetic field
Q5. What is electric potential?
- Electric field strength
- Work done per unit charge to move charge ✓ (correct)
- Charge accumulation
- Current flow
Q6. What is the electric field inside a conductor in electrostatic equilibrium?
- Maximum
- Zero ✓ (correct)
- Constant
- Undefined
Q7. What is a dielectric material?
- Conductor
- Non-conducting material that can be polarized ✓ (correct)
- Magnetic material
- Radioactive material
Q8. What is Gauss Law?
- F = ma
- Total electric flux through closed surface = q/ε₀ ✓ (correct)
- V = IR
- P = VI
Q9. What is electric potential energy?
- Kinetic energy of charge
- Work done to assemble charges configuration ✓ (correct)
- Energy dissipated
- Magnetic energy
Q10. What is the relationship between electric field and electric potential?
- E = V/d
- E = -dV/dr ✓ (correct)
- E = V×d
- E = d/V
Frequently Asked Questions
Why do like charges repel and opposite charges attract?
This is explained by Coulombs Law. The mathematical form (positive product repels, negative product attracts) reflects fundamental electromagnetic interactions between charges.
What is the difference between electric field and electric potential?
Electric field is the force per unit charge (N/C or V/m). Electric potential is the work per unit charge (Joules/Coulomb or Volts). Field is a vector; potential is a scalar.
More 12 Physics MCQs
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