Question

An electric bell works on the .......... effect of a current and uses an ..........

• A. Magnetic, Permanent magnet
• B. Heating, Electromagnet
• C. Magnetic, Electromagnet
• D. Heating, Permanent magnet

Answer 1

Answer: (C)

Magnetic, Electromagnet

An electric bell works with the principle of working of electromagnetism. When the switch is pushed on, the circuit gets completed and the current starts flowing through the U-shaped electromagnet which creates a magnetic field in the core. This attracts the iron armature. When the armature moves towards the electromagnet, the hammer strikes the gong and the bell rings.