Amperes Law(General Knowledge > General Science ) Questions and Answers
Question 1. Which law can ampere’s circuital be derived from?
Newton’s Law
Biot-Savart Law
Gauss Law
Kirchhoff’s Law
Explanation:-
Answer: Option B. -> Biot-Savart Law
Question 2. What is the magnetic field inside a pipe?
Zero
Infinity
Unity
None of these
Explanation:-
Answer: Option A. -> Zero
Question 3. Ampere’s circuital law is analogous to a law in electrostatics
Gauss’s law
Kirchhoff’s law
Faraday’s law
Coulomb’s law
Explanation:-
Answer: Option A. -> Gauss’s law
Question 4. Amperes circuital law holds for
unsteady current
steady current
any type of current
variable current
Explanation:-
Answer: Option B. -> steady current
Question 5. The direction of magnetic field is determined by
Fleming left hand rule
Right hand thumb rule
Fleming right hand rule
None of these
Explanation:-
Answer: Option B. -> Right hand thumb rule
Question 6. A current I flows along the length of an infinetly long, straight thin walled pipe
The magnetic field at all points inside the pipe is the same, but not zero
The magnetic field is zero only on the axis of the pipe
The magnetic field is different at different points inside the pipe.
The magnetic field at any point inside the pipe is zero
Explanation:-
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
div(i) = h
curl(h) = j
div(h) = j
curl(b) = d
Explanation:-
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)
μ0/2
μ0/4
2μ0
4μ0
Explanation:-
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
directly proportional
inversly proportional
zero
none of these
Explanation:-
Answer: Option A. -> directly proportional
Question 10. The magnetic field of the solenoid is 18
