Magnetism

11. The region around a magnet where its magnetic influence is felt is called:

    a) Magnetic pole

    b) Magnetic field

    c) Magnetic flux

    d) Magnetic force

12. Which of the following is a natural magnet?

    a) Bar magnet

    b) Horseshoe magnet

    c) Permanent magnet

    d) Lodestone

13. The magnetic field lines inside a magnet:

    a) Move from south to north pole

    b) Move from north to south pole

    c) Do not exist

    d) Are randomly distributed

14. The Earth’s magnetic field is generated by:

    a) The Sun

    b) The Moon

    c) The Earth’s core

    d) The Earth’s atmosphere

15. The magnetic field lines around a current-carrying wire form:

    a) Circles

    b) Lines

    c) Spirals

    d) Squares