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_________________?

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. 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. 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 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

6. 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

7. What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200 ?

   A. 2
   B. 4
   C. 6
   D. 8

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

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

9. A certain amount of current flows through a ring-shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil ?

   A. Decreases
   B. Increases
   C. Remains same
   D. First increases and then decreases depending on the depth of iron in¬sertion

10. 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