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AMPERES LAW MCQs

Total Questions : 20 | Page 1 of 2 pages
Question 1. Which law can ampere’s circuital be derived from?
  1.    Newton’s Law
  2.    Biot-Savart Law
  3.    Gauss Law
  4.    Kirchhoff’s Law
 Discuss Question
Answer: Option B. -> Biot-Savart Law
Question 2. What is the magnetic field inside a pipe?
  1.    Zero
  2.    Infinity
  3.    Unity
  4.    None of these
 Discuss Question
Answer: Option A. -> Zero
Question 3. Ampere’s circuital law is analogous to a law in electrostatics
  1.    Gauss’s law
  2.    Kirchhoff’s law
  3.    Faraday’s law
  4.    Coulomb’s law
 Discuss Question
Answer: Option A. -> Gauss’s law
Question 4. Amperes circuital law holds for
  1.    unsteady current
  2.    steady current
  3.    any type of current
  4.    variable current
 Discuss Question
Answer: Option B. -> steady current
Question 5. The direction of magnetic field is determined by
  1.    Fleming left hand rule
  2.    Right hand thumb rule
  3.    Fleming right hand rule
  4.    None of these
 Discuss Question
Answer: Option B. -> Right hand thumb rule
Question 6. A current I flows along the length of an infinetly long, straight thin walled pipe
  1.    The magnetic field at all points inside the pipe is the same, but not zero
  2.    The magnetic field is zero only on the axis of the pipe
  3.    The magnetic field is different at different points inside the pipe.
  4.    The magnetic field at any point inside the pipe is zero
 Discuss Question
Answer: Option B. -> The magnetic field is zero only on the axis of the pipe
Question 7. Find the Maxwell law derived from Ampere law
  1.    div(i) = h
  2.    curl(h) = j
  3.    div(h) = j
  4.    curl(b) = d
 Discuss Question
Answer: Option B. -> curl(h) = j
Question 8. Magnetic field at the centre of a current carrying circular loop having 1A current and number of turns one will be(radius of the loop is 1m)
  1.    μ0/2
  2.    μ0/4
  3.    2μ0
  4.    4μ0
 Discuss Question
Answer: Option A. -> μ0/2
Question 9. For a thick long wire of uniform cross section of radius a carrying a steady current I, the magnetic field inside the wire with distance r is
  1.    directly proportional
  2.    inversly proportional
  3.    zero
  4.    none of these
 Discuss Question
Answer: Option A. -> directly proportional
Question 10. The magnetic field of the solenoid is 18
  1.    300A
  2.    30A
  3.    3A
  4.    300mA
 Discuss Question
Answer: Option B. -> 30A

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