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RGPV Unit – 5 Engineering Physics MCQs
Q1. Electric flux is
1. vector with unit Nm²1/c
2. vector with unit Nm²1/c²
3. scalar with unit Nm²1/c²
4. scalar with unit Nm²1/c
Answer:- 4) scalar with unit Nm²1/c
Q2. When area is held perpendicular to the line then the magnitude of the electric flux
1. Zero
2. Negative
3. Maximum
4. Minimum
Answer:- 3) Maximum
Q3. The maximum value of flux is obtained at the angle between E vector and A vector equal to
1. 0°
2. 70°
3. 90°
4. 180°
Answer:- 1) 0°
Q4. The maximum value of flux is obtained at the angle between E vector and surface area is
1. 0°
2. 70°
3. 90°
4. 180°
Answer:- 3) 90°
Q5. For the computation of electric flux, the surface area should be
1. flat
2. spherical
3. parallel
4. curved
Answer:- 1) flat
Q6. The electric field intensity inside a hollow charged sphere is
1. zero
2. infinite
3. maximum
4. minimum
Answer:- 1) zero
Q7. Total flux through a closed surface due to charge inside it depends
1. surface sharp
2. charge
3. medium
4. both 1 and 2
Answer:- 4) both 1 and 2
Q8. A charged conductor has a charge on its
1. surface
2. inside
3. outside
4. none of these
Answer:- 1) surface
Q9. Which of the following is a scalar quantity?
1. Electric displacement density
2. Potential in an electric field
3. Electric field strength
4. None of the above
Answer:- 2) Potential in an electric field
Q10. The displacement current arises due to
1. positive charge only
2. negative charge only
3. both negative and positive charge
4. time-varying E.F
Answer:- 4) time-varying E.F
Q11. Maxwell modified ampere’s law is valid
1. only when an electric field does not change with time
2. only when electric field varies with time
3. in both of the above situation
4. none of the above
Answer:- 2) Only when an electric field varies with time
Q12. Poynting vector gives the
1. direction of polarization
2. rate of energy flow
3. intensity of electric field
4. intensity of magnetic field
Answer:- 2) Rate of energy flow
Q13. The displacement current concept has been introduced by
1. Faraday
2. Lenz
3. Maxwell
4. Gauss
Answer:- 3) Maxwell
Q14. The ratio of the electric field E and the magnetic field H has the dimension of
1. inductance
2. capacitance
3. resistance
4. velocity
Answer:- 4) velocity
Q15. Displacement current goes through the gap between the plates of a capacitor when the charge of a capacitor is
1. increase
2. decrease
3. remain constant
4. zero
Answer:- 1) Increase
Q16. Who developed the concept of time-varying electric field
1. Faraday
2. Lenz
3. Maxwell
4. Gauss
Answer:- 4) Maxwell
Q17. The equation of continuity define the relation between
1. electric field and magnetic field
2. electric field and charges density
3. flux density and charge density
4. current density and charge density
Answer:- 4) Current density and charge density
Q18. The charge build-up in the capacitor is due to which quantity?
1. Conduction current
2. Displacement current
3. Convection current
4. Direct current
Answer:- 2) Displacement current
Q19. The curl of the electric field intensity is
1. conservative
2. rotational
3. static
4. dynamic
Answer:- 2) Rotational
Q20. In an electromagnetic wave, electric field E vector and magnetic field B vector are
1. mutually perpendicular to each other
2. all parallel
3. at 45° to each other
4. 60°
Answer:- 1) Mutually perpendicular to each other
Q21. The Poynting vector is associated with
1. flux in a magnetic field
2. power flow in electrostatic
3. current in an electrostatic field
4. charge in an electrostatic field
Answer:- 2) Power flow in an electrostatic
Q22. Electromagnetic waves carry
1. Only energy
2. Only momentum
3. Both energy and momentum
4. None of the above
Answer:- 3) Both energy and momentum
Q23. Which one of the following is a non-polar molecule?
1. Water
2. Carbon dioxide
3. Ammonia
4. HCl
Answer:- 2) Carbon dioxide
Q24. Which one of the following is a polar molecule?
1. Water
2. Carbon dioxide
3. Ammonia
4. Oxygen
Answer:- 3) Ammonia
Q25. The magnitude of the induced dipole moment in the atom or molecule is
1. proportional to the applied field
2. inversely proportional to the applied field
3. directly proportional to the square of electric field
4. inversely proportional to the square of electric field
Answer:- 1) proportional to the applied field
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Q26. The net electric dipole moment per unit volume of the dielectric material is known as
1. Electric displacement of the dielectric
2. Dielectric constant of the dielectric
3. Electric polarization of the dielectric
4. Free surface charge density
Answer:- 3) Electric polarization of the dielectric
Q27. The electric polarization P is defined as
1. Induced dipole moment per unit volume of the dielectric
2. Free charge per unit volume of the material
3. Induced dipole moment per unit surface area of dielectric
4. Induce current per unit volume of dielectric
Answer:- 1) Induced dipole moment per unit volume of the dielectric
Q28. Electric displacement vector D is connected with
1. The free charge or true charge only
2. The induced charge only
3. Both induced charge and free charge
4. Induce change density only
Answer:- 1) The free charge or true charge only
Q29. What is the unit of polarization
1. cm
2. v/m
3. c/m²
4. f/m²
Answer:- 3) c/m²
Q30. Tesla is a unit of
1. flux density
2. field strength
3. inductance
4. flux
Answer:- 1) Flux density
Q31. Which of the following is a vector quantity?
1. Relative permeability
2. Magnetic field intensity
3. Flux density
4. Magnetic potential
Answer:- 2) Magnetic field intensity
Q32. If the distance between the two-point change is doubled then electric force will be
1. doubled
2. half
3. increased by 4 time
4. decrease by 4 time
Answer:- 4) decrease by 4 time
Q33. If air is replaced by any other dielectric medium the force of attraction or repulsion between two charges
1. Decrease
2. Increase
3. Remain the same
4. Zero
Answer:- 1) Decrease
Q34. Electric field lines emerge from the charge in dimension
1. One
2. Two
3. Three
4. None
Answer:- 3) Three
Q35. The concept of electric field line was introduced by
1. Faraday
2. Einstein
3. Henry
4. All of these
Answer:- 1) Faraday
Q36. A charge at rest create around it
1. Electric field
2. Magnetic field
3. Gravitational field
4. All of these
Answer:- 1) Electric field
Q37. Which of the following is the electric field intensity
1. F/q
2. F/qa
3. qA/E
4. F/ma
Answer:- 1) F/q
Q38. The electric field intensity inside a hollow charged sphere is
1. zero
2. maximum
3. minimum
4. infinite
Answer:- 1) zero
Q39. The electric field line is closed where the field is
1. strong
2. weak
3. uniform
4. variable
Answer:- 1) strong
Q40. Electric dipole moment is
1. scalar
2. neither scalar or vector
3. a vector directed -q to +q
4. a vector directed +q to -q
Answer:- 3) a vector directed -q to +q
Q41. The energy e is stored on a capacitor is found by
1. E=1/2CV²
2. E=1/2VC
3. E=1/2VQ²
4. E=1/2V²C²
Answer:- 1) E=1/2CV²
42. Curl is
1. vector quantity
2. scalar quantity
3. zero
4. none of these
Answer:- 1) vector quantity
Q43. Electric flux is
1. vector quantity
2. scalar quantity
3. zero
4. none of these
Answer:- 2) scalar quantity
Q44. ______ Used to convert the line integral vector field to surface
1. Stoke theorem
2. Coulomb law
3. Dielectric constant
4. Electric flux
Answer:- 1) Stoke theorem
Q45. Poynting vector was discovered by
1. Faraday
2. Gauss
3. Maxwell
4. John H. Poynting
Answer:- 4) John H. Poynting
Q46. Poynting vector was discovered in the year
1. 1982
2. 1882
3. 1884
4. 1984
Answer:- 3) 1884
Q47. A substance made of a polar molecule is called
1. Polar substance
2. Non-polar substance
3. Dielectric constant
4. Dielectric
Answer:- 1) Polar substance
Q48. A substance made of non-polar molecules is called
1. Polar substance
2. Non-polar substance
3. Dielectric constant
4. Dielectric
Answer:- 1) Non-polar substance
Q49. SI unit of displacement current density is
1. Ampere meter
2. Ampere/meter²
3. Ampere/meter
4. Ampere
Answer:- 2) Ampere/meter²
Q50. The wave impedance of free space
1. 100 πΩ
2. 120 πΩ
3. 130 πΩ
4. 180 πΩ
Answer:- 2) 120 πΩ
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Phijics unit 1234 mcq question
Kaha p milege
Electronic staticvaccum is 5 i want to 1 to 4 unit mcq where is this meet
ok, I will try to post-unit 1234 MCQs as soon as possible
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