MAGNETIC EFFECT OF CURRENT : MCQ ON FORCE ON CURRENT CARRYING CONDUCTOR

 

Q1 Two free parallel wires carrying currents in the same direction :

  • (a) attract each other
  • (b) repel each other
  • (c) do not effect each other
  • (d) get rotated to be perpendicular to each other

  • (a) attract each other

Q2 Value of    `\frac{μ_{0}}{4π}`  is given by :

  • (a) `10^{-7}`
  • (b) `10^{-5}`
  • (c) `10^{-4}`
  • (d) `10^{-6}`

  • `10^{-7}`

Q3  Force on a current carrying conductor placed inside a magnetic field :

  • (a) F=BILsinθ
  • (b) F= ma
  • (c) F=B/LI
  • (d) `\frac{μ_{0}}{4π}` BILsinθ

  • a) F=BILsinθ

Q4 Two parallel wires carrying currents in the same direction attract each other because of :

  • (a) Potential difference between them
  • (b) Mutual induction between them
  • (c) Electric forces between them
  • (d) Magnetic forces between them

  • (d) Magnetic forces between them

Q5 The direction of magnetic force experienced by a charged particle perpendicular to the plane containing v (velocity) and B (Magnetic field) (True/False)

  • (a) True
  • (b) False

  • (a) True


Q6 The magnetic field which is parallel to the plane of the loop or coil is called radial magnetic field.

  • (a) True
  • (b) False

  • (a) True

Q7 The net torque on current loop in a uniform magnetic field is zero.

  • (a) True
  • (b) False


  • (b) False

Q8 The units of magnetic moment are

  • (a) `Am^{-2}`
  • (b) A m
  • (c) `Am^{-1}`
  • (d) `Am^{2}`

  • (d) `Am^{2}`

Q9.  Moving coil galvanometer is used for the measurement of

  • (a) Very small electric current 
  • b) Large electric current
  • c). Speed 
  • d). Length

  • (a) Very small electric current 

Q10 To convert galvanometer into ammeter which one is connected with the coil

  • a) High resistance wire in series 
  • b) Low resistance wire in parallel
  • c) High resistance wire in parallel
  • d) Low resistance wire in series

  • b) Low resistance wire in parallel

  

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