Multiple choice

In electric bells, the magnet used is

  1. permanent magnet

  2. bar magnet

  3. temporary magnet

  4. none of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Electric bells use electromagnets (temporary magnets) that become magnetic only when current flows through the coil. This temporary magnetization is essential for the bell's mechanism - the magnet attracts a hammer when energized, then releases when a contact breaks the circuit, creating the ringing action.

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