MAGNETIC EFFECT OF CURRENT: MCQ ON MAGNETIC MATERIALS SET 3

  

Q1 The factors on which one magnetic field strength produced by current carrying solenoids depends are


  • (a) Magnitude of current
  • (b) Number of turns
  • (c) Nature of core material
  • (d) All of the above

  • (d) All of the above

Q2 The magnetic field produced due to a solenoid is same as that produced by a....

  • a) Bar magnet
  • b) Electromagnet
  • c) semi- circular coil containing current
  • d) None of these 

  • a) Bar magnet

Q3  A magnetic dipole is placed in a uniform magnetic fields, "B". At what angle magnetic dipole to be placed  in magnetic field so that  the potential energy is minimum

  • a) `90^{0}`
  • b) `30^{0}`
  • c) `45^{0}`
  • d) `0^{0}`

  • d) `0^{0}`

Q4 The small angle between magnetic axis and geographic axis at a place is called

  • (a) Magnetic inclination 
  • (b) Magnetic dip
  • (c) Magnetic declination 
  • (d) None of the above

  • (c) Magnetic declination 

Q5 Horizontal component of earth at a place is 3.2 x `10^{-5}`T, and angle of dip is `60^{0}` The resultant intensity of earth’s field at the place is

  • a) 3.2 x `10^{-5}`T
  • b) 1.6 x `10^{-5}`T
  • c) 6.4 x `10^{-5}`T
  • d) 12.8 x `10^{-5}`T

  • c) 6.4 x `10^{-5}`T

Q6 Isogonic lines on magnetic map represent lines of


  • (a) Zero declination 
  • (b) Equal declination
  • (c) Equal dip 
  • (d) Equal horizontal field

  • (b) Equal declination

Q7  At magnetic poles which out of following is zero


  • (a) Horizontal component (H) of earth's magnetic field 
  • (b) Vertical component of earth's magnetic field
  • (c) Total strength of earth’s magnetic field(R) 
  • (d) Magnetic declination


  • (a) Horizontal component (H) of earth's magnetic field 

Q8 At a certain place, the horizontal component of earth’s magnetic field is √3 times the vertical component. The angle of dip at that place is


  • a) `90^{0}`
  • b) `30^{0}`
  • c) `45^{0}`
  • d) `0^{0}`

  • b) `30^{0}`

Q9.  Magnetic dip at a place can be measured by ‘Dip circle’.

  • a) True
  • b) False

  • a) True

Q10 At a particular place, horizontal and vertical components of earth’s magnetic field are equal. The angle of dip at that place is

  • a) `90^{0}`
  • b) `30^{0}`
  • c) `45^{0}`
  • d) `0^{0}`

  • c) `45^{0}`

  

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