What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?

Related Mcqs:

1. Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be_____________?

   A. 100 N
   B. 10 N
   C. 1 N
   D. 0.1 N

2. Two infinitely long parallel conductors in vacuum any separated 1 metre between centers >then a current of 1 ampere flows the. uk each conductor, produce on each other a force of_________________?

   A. 2 x 1(T2 N/m)
   B. 2 x KT3 N/m
   C. 2 x 10″5 N/m
   D. 2x 1(T7 N/m)

3. The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is________________?

   A. proportional to 7
   B. proportional to X
   C. proportional to distance between the conductors
   D. inversely proportional to I

4. The force between two long parallel conductors is inversely proportional to_____________?

   A. radius of conductors
   B. current in one conductor
   C. product of current in two conductors
   D. distance between the conductors

5. A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be______________?

   A. zero
   B. BLI
   C. B2LI
   D. BLI2

6. The direction of magnetic lines of force is________________?

   A. from south pole to north pole
   B. from north pole to south pole
   C. from one end of the magnet to another
   D. none of the above

7. The materials are a bit inferior conductors of magnetic flux than air

   A. ferromagnetic
   B. paramagnetic
   C. diamagnetic
   D. dielectric

8. A 200 turn coil having an axial length of 30 mm and a radius of 10 mm is pivoted in a magnetic field having a flux density of 0.8 T. If the coil carries a current of 0.5 A, the torque acting on the coil will be_____________?

   A. 8 N-m
   B. 0.48 N-m
   C. 0.048 N-m
   D. 0.0048 N-m

9. The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength ?

   A. 2500 AT/m
   B. 250 AT/m
   C. 25 AT/m
   D. 2.5 AT/m

10. A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be____________?

    A. 240 N
    B. 24 N
    C. 2.4 N
    D. 0.24 N