Charge — meanings in physics, law, warfare, finance, and everyday use

Principal senses and quick list

The most frequent senses include:

• Electric charge: a fundamental physical property of matter that causes electromagnetic interactions — see electric charge.
• Authority or responsibility: to take charge is to accept leadership or control over a task or group.
• Military charge: a rapid advance to engage the enemy directly, often called simply a charge in battle — see charge (warfare).
• Financial charge: a fee or cost assessed for a service, item, or penalty — see charge (finance).
• Criminal or legal charge: an allegation that a person committed an offense, initiating prosecution.
• To charge a firearm: to load a weapon so it is ready to fire.
• Engine charge: the quantity and composition of air or air–fuel mixture drawn into an internal combustion engine.
• Sports: in basketball, a charge is an offensive foul committed by a player who runs into a defender who has established position.
• CHARGE syndrome: an acronym used in medicine to name a set of congenital anomalies.

Charge in physics

In physics, electric charge is a basic property of some subatomic particles that produces electromagnetic effects. Objects with net charge exert forces on one another and interact with electric and magnetic fields; like charges generally repel and unlike charges attract. Quantities of charge are conserved in isolated systems and are measured in standard units in scientific contexts. The physics sense is technical and typically appears in scientific, engineering and educational writing.

Legal, financial and administrative uses

As a legal term, a charge is a formal allegation that a person committed a crime; charges may be brought by prosecutors and are resolved according to criminal procedure. Separately, in civil or administrative contexts, a charge can mean an obligation or responsibility given to someone — for example, to be "in charge" of a department. In finance, a charge commonly denotes a fee assessed for goods or services (an ATM charge, admission charge, or late payment charge) or a liability recorded on an account. A charge card is a payment card that requires the balance to be paid in full periodically rather than revolving like a credit card. For wartime operations and detention, the phrase "charged with certain rights" may appear in discussions about legal protections and procedural guarantees afforded to individuals in custody or under military jurisdiction — see related rights and procedures.

Military, mechanics and sports

In military usage a charge is a deliberate, often sudden advance to close with the enemy. Historic examples include infantry bayonet charges, cavalry charges and shock assaults; the effectiveness of a charge depends on speed, momentum, morale and tactical context. In mechanical contexts, to charge an engine means to provide it with the intake mixture of air or air and fuel; terms such as "charge air" often refer specifically to intake air, especially in turbocharged or supercharged engines. In shooting and firearms maintenance, charging a weapon means loading it so it is ready to fire. In sports such as basketball, a charge is an offensive foul called when the ball carrier runs into a defender who had established position.

History, etymology and notable distinctions

The word "charge" derives from Old French charger, meaning "to load," which in turn comes from Latin roots related to burdens and encumbrance. Over centuries the verb and noun developed technical applications (loading a weapon, imposing a duty) and abstract senses (imposing a cost or accusation). Distinguishing among senses relies on context: a financial charge is different from a criminal charge; a military charge is an action rather than a fee; and electric charge is a precise scientific concept distinct from everyday senses of taking responsibility.

Practical examples and when to be careful

Example usages include: "She was charged with theft" (legal); "He is in charge of the project" (responsibility); "The cavalry launched a charge" (military); "The bank applied a monthly charge" (fee); "The battery carries a negative charge" (physics). Speakers and writers should choose clarifying words when ambiguity is possible (for instance, "criminal charge" vs. "service charge") to prevent misunderstanding. For further reading on the scientific sense see electric charge, for military doctrine see charge (warfare), for legal and administrative procedures see related legal rights, and for consumer fees see charges and fees.