ampere

/'æmpeə/

Thân thiện

Definition

1. Noun:
   • The base unit of electric current in the International System of Units (SI): An "ampere" is the standard scientific unit for measuring the flow of electric charge. It is defined by the fixed numerical value of the elementary charge.
   • A unit for measuring the strength of an electric current: In practical terms, an "ampere" (often shortened to "amp") quantifies how much electric current is flowing in a circuit.

Examples of Usage

• Noun:
  • A standard household outlet can safely deliver up to 15 amperes.
  • The device requires a current of only 0.5 amperes to operate.
  • One ampere is defined as one coulomb of charge passing a point per second.

Advanced Usage

• "Ampere-turn": A unit of magnetomotive force, calculated by multiplying the current in amperes by the number of turns in a coil.
  • The electromagnet's strength was rated at 500 ampere-turns.

Variants and Related Words

• Amp (n): The common abbreviation for "ampere".
  • Make sure the fuse is rated for 10 amps.
• Amperage (n): The strength of an electric current expressed in amperes.
  • Check the amperage of the circuit before connecting the tool.
• Milliampere (n): One thousandth of an ampere, a common unit for small electronic devices.
  • The sensor draws a current of just a few milliamperes.

Synonyms

• Current unit: A general term for a unit measuring electric current flow.

Related Terms and Historical Context

• Absolute ampere: A former unit of electric current, slightly different from the SI ampere.
• International ampere: A former international standard unit of electric current.
• Coulomb per second: A descriptive equivalent for the ampere, highlighting its definition.

Học thuật

Noun

1. the basic unit of electric current adopted under the Systeme International d'Unites
   • a typical household circuit carries 15 to 50 amps
2. a former unit of electric current (slightly smaller than the SI ampere)

Từ đồng nghĩa

• amp
• A
• international ampere