Electromagnetism questions | form four Physics

Explain the meaning of
(i) Magnetic induction.
(ii) Magnetic screening.

Answer / Solution

UNSOLVED

Draw a circuit diagram of an electric bell and explain how it works.

Answer / Solution

UNSOLVED

State what you understand by the following expressions:
(i) Magnetic field. (ii) Magnetic lines of force.

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UNSOLVED

Sketch the lines of force between two (2) bars of magnet placed on a horizontal table with
(i) their N-poles facing each other.
(ii) the N-pole of one facing the S-pole of the other.

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UNSOLVED

Explain why:
(i) the strength of a magnet cannot be increased beyond a certain limit.
(ii) an increase in temperature weakens or destroys the magnetism of a magnet.

Answer / Solution

UNSOLVED