Question

Which of the following is the input and output of an electric bell respectively?

• A. Mechanical energy
  Sound energy
• B. Electrical energy
  Mechanical energy
• C. Electrical energy
  Sound energy
• D. Electrical energy
  Magnetic energy

Answer 1

The correct option is C Electrical energy

Sound energy
In an electric bell when we switch on the circuit, a moving iron hits the gong and produces sound. So, electrical energy is converted into sound energy.
i.e. the input of an electric bell is electricity and the output is sound.