Electromagnetism – Online MCQs – Physics 10th

1. The presence of a magnetic field can be detected by a:

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:

3. If we increase the number of loops, the turning effect of a coil would be:

4. A current carrying coil kept in a magnetic field, experiences a torque, which is the:

5. The direction of induced e.m.f. in a circuit is in accordance with the conservation of:

6. We apply Lenz’s law to find out the direction of:

7. The turn ratio of a transformer is 10. It means:

8. In the MKS system, the unit of magnetic flux density is:

9. There are _________ fundamental forces in nature.

10. A current carrying coil kept in a magnetic field experiences a torque which is zero when the:

11. Tesla is a unit of:

12. The direction of the induced current is given by:

13. The magnetic field is the strongest:

14. The current-carrying loop inside the magnetic field rotate due to the:

15. The power is transmitted over long distances with high voltage to:

16. The induced emf of a coil is directly proportional to:

17. If the current in a wire is placed perpendicular to a magnetic field _________ the force on the wire:

18. The force that attracts matter across long distances.

19. At the generating station, the AC voltage is:

20. The magnetic field direction around a current-carrying conductor can be determined using the Flemings