electric bell

Thân thiện

An electric bell rings in the school hallway between classes.

Definition

1. Noun:
   • A bell activated by the magnetic effect of an electric current: An "electric bell" is a device that produces a ringing sound when an electric current flows through it, typically using an electromagnet to move a clapper against a bell.

Usage

• The term "electric bell" is used to describe a specific type of signaling device. It is a compound noun where "electric" modifies "bell" to specify its power source and operating mechanism. It functions as a singular, countable noun (e.g., , ).

Examples

• Noun:
  • The old school had an electric bell to signal the end of class.
  • When you press the button, it completes the circuit and rings the electric bell.
  • The fire alarm system is connected to a loud electric bell.

Advanced Usage

• "to ring like an electric bell": This simile can describe something that produces a sharp, clear, and persistent sound.
  • The notification on his phone rang like an electric bell in the quiet library.

Variants and Related Words

• Bell (n): A hollow device, typically made of metal, that rings when struck.
• Buzzer (n): An electrical device that makes a buzzing sound, often used similarly to an electric bell for signaling but with a different sound mechanism.
• Electromagnet (n): A core of magnetic material surrounded by a coil of wire through which an electric current is passed to magnetize the core. This is the key component inside an electric bell.

Synonyms

• Signal bell: A bell used for signaling.
• Alarm bell: A bell used to sound an alarm, which can be electrically operated.

Related Phrases

• Ring the bell: To cause a bell to sound. While not a phrasal verb specific to "electric bell," it describes the action.
  • Please ring the bell if you need assistance.

Related Idioms

• Saved by the bell: Rescued from a difficult situation by a last-minute interruption. This idiom originates from boxing but is now used generally. It is conceptually related to the sound of a bell signaling an end or rescue.
  • I didn't know the answer, but I was saved by the bell when the fire alarm went off.

Học thuật

Noun

1. a bell activated by the magnetic effect of an electric current