9. Torque (F) on a current loop is (a) =AxB (c) (b) 3/2 =xB (d) None...

  

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9. Torque (F) on a current loop is (a) =AxB (c) (b) 3/2 =xB (d) None 10. The potential energy U of a magnetic moment in a magnetic field B. (а) дВСosф (b) - µBCoso В. (c) µB/Coso (d) None 11. DC motor works on the principle of (a) Work (b) Potential (c) Torque (d) None 12. Hall effect measurements can be used for sign of the charge carriers and concentrati of the carriers by the formula -J,B, E, -J,B, nq = E, %3D %3D (а) 2 (c) -J,B, (b) 3/2 E, (d) None 13. Magnetic permeability in free space () has the value of (а) 2л х 107 Wb/А.m (b) 4л х 107 wb/А.m (c) 8n x 107 Wb/A.m (d) None 14. Biot and Savart law explains dB as (a) /2n (1 dl Sin or) (b) /4n (1 dl Sin d'r) (c) /4n (I dl Sin) (d) None 9. Torque (F) on a current loop is (a) =AxB (c) (b) 3/2 =xB (d) None 10. The potential energy U of a magnetic moment in a magnetic field B. (а) дВСosф (b) - µBCoso В. (c) µB/Coso (d) None 11. DC motor works on the principle of (a) Work (b) Potential (c) Torque (d) None 12. Hall effect measurements can be used for sign of the charge carriers and concentrati of the carriers by the formula -J,B, E, -J,B, nq = E, %3D %3D (а) 2 (c) -J,B, (b) 3/2 E, (d) None 13. Magnetic permeability in free space () has the value of (а) 2л х 107 Wb/А.m (b) 4л х 107 wb/А.m (c) 8n x 107 Wb/A.m (d) None 14. Biot and Savart law explains dB as (a) /2n (1 dl Sin or) (b) /4n (1 dl Sin d'r) (c) /4n (I dl Sin) (d) None