Question

What is the principle of an electric bell?

• A. Electrical energy is converted into sound energy
• B. Mechanical energy is converted into sound energy
• C. Electrical energy is converted into mechanical energy
• D. Mechanical energy is converted into electrical energy

Answer 1

The correct option is A

Electrical energy is converted into sound energy

An electric bell functions by means of an electromagnet. When an electric current is applied it causes a spring-loaded arm to repeatedly contact a metallic gong which produces a repetitive buzzing or clanging sound. Therefore, an electric bell converts electrical energy into sound energy.