Question

Match the following

1. Horse-shoe magnet	a. Holds the armature in place
2. Armature	b. Electromagnet
3. Spring strip	c. Passes electric current to the spring strip
4. Adjusting screw	d. Fixed to the spring strip

• A. $1-d,2-a,3-c,4-b$
• B. $1-a,2-c,3-b,4-d$
• C. $1-b,2-d,3-a,4-c$
• D. $1-c,2-b,3-d,4-a$

Answer 1

Answer: (C)

$1-b,2-d,3-a,4-c$

The main parts of an electric bell are horse-shoe magnet, soft iron armature, spring strip, gong, hammer, adjusting screw, switch, and battery. The horse-shoe magnet acts like an electromagnet in the presence of current and attracts the iron armature that is fixed to the spring strip. When the spring strip comes in contact with the adjusting screw the circuit gets completed and current passes through it.