electric current

Thân thiện

An electric current flows through a simple circuit to light a small bulb.

Definition

1. Noun:
   • A flow of electricity through a conductor: "Electric current" refers to the continuous movement of electric charge, typically carried by electrons, through a material that allows it to flow, such as a metal wire. It is a fundamental concept in physics and electrical engineering.

Usage

• The term "electric current" is used to describe the phenomenon of moving electric charge. It is a measurable quantity, with its strength (or magnitude) expressed in amperes (A).
• It is commonly discussed in contexts involving electrical circuits, power generation, electronics, and the functioning of electrical devices.

Examples

• Noun:
  • An electric current flows through the copper wire when the circuit is closed.
  • The strength of the electric current determines how brightly the bulb glows.
  • Water is a poor conductor of electric current unless it contains dissolved salts.

Advanced Usage

• "To carry an electric current": This phrase describes a material's ability to allow the flow of electricity.
  • Metals like silver and copper are excellent at carrying an electric current.
• "Alternating current (AC)" and "Direct current (DC)": These are specific types of electric current. AC periodically reverses direction, while DC flows in one constant direction.
  • Household outlets supply alternating current (AC), while batteries provide direct current (DC).

Variants and Related Words

• Current (n): Often used as a shorter form of "electric current" in technical contexts.
  • The current in this circuit is too high.
• Amperage (n): The strength of an electric current measured in amperes.
  • Check the amperage to ensure the wire is rated for the load.

Synonyms

• Electrical flow: A descriptive synonym emphasizing the movement of electricity.
• Current: The common abbreviated term in technical language.

Related Phrases

• Electric current density: A measure of electric current per unit area of cross-section.
  • The design must account for the electric current density to prevent overheating.
• To induce an electric current: To cause a current to flow, often by changing a magnetic field.
  • The moving magnet can induce an electric current in the coil of wire.

Related Idioms

(Note: "Electric current" is a precise scientific term and is not commonly used in idiomatic expressions. The idioms below are related to the broader concept of electricity or the word "current".) - To go with the current: To follow the prevailing trend or opinion. (This idiom uses "current" in its metaphorical sense of a flowing stream, not specifically "electric current"). - Instead of arguing, he decided to just go with the current. - A current of thought/opinion: A prevailing trend in thinking. - A strong current of opinion supports the new policy.

Học thuật

Noun

1. a flow of electricity through a conductor
   • the current was measured in amperes

Từ đồng nghĩa

• current