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_____________?

Related Mcqs:

1. 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)

2. 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

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. 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 ?

   A. 22 x 10″8 N
   B. 22 x 10″7 N
   C. 22 x 10-6 N
   D. 22 x 10″5 N

5. 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

6. 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

7. The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields______________?

   A. meter is surrounded by strong magnetic fields
   B. a soft iron shielding is used
   C. a plastic shielding is provided
   D. a shielding of anon-magnetic material is used

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 materials are a bit inferior conductors of magnetic flux than air

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

10. The change of cross-sectional area of conductor in magnetic field will affect______________?

    A. reluctance of conductor
    B. resistance of conductor
    C. A. and B. both in the same way
    D. none of the above