Question

In the case of an electric bell, the lodestone is connected to a metal strip called the armature.

• A. True
• B. False

Answer 1

The correct option is B False

1. Lodestone is a naturally occurring magnetic rock which is a natural magnet.
2. Natural magnets are not used in an electric bell.
3. Only an electromagnet is used in an electric bell because it is a temporary magnet and behaves as a magnet only when current flows through its coil.
4. We can switch “on” or “off” the magnetism of an electromagnet which is not the case with a lodestone which is a permanent magnet.
5. On switching on an electric bell, the electromagnet attracts the armature of the bell and consequently forces the hammer to hit the gong and produce sound.
6. The electromagnet is connected to a metal strip called “armature” as shown below.

Hence, the given statement is false.