1. A wire of length 2 metre carries a current 1 ampere, is bent to form a circle. The magnetic moment of the coil is :

2. The magnetic field of a given length of a ware for single turn coil at its centre is B. Then.its value for two turns of coil will be :

3. When charged particle enters-a uniform magnetic field, its K.E.:

4. To convert galvanometer into voltmeter one should connect :

5. A charge q moves in a region, where electric field E and magnetic field B both exist, then force on it is :

6. Isoclinic lines are the lines joining places with :

7. The most suitable metal for making permanent magnets is :

8. The SI unit of magnetic dipole moment is

9. Earth's magnetism was discovered by:

10. According to Gauss's theorem in magnetism, surface integral of magnetic field intensity over a surface (closed or open) is always: