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Electric charge (symbol q, sometimes Q) is a physical property of matter that causes it to experience a force when placed in an electromagnetic field. Electric charge can be positive or negative. Like charges repel each other and unlike charges attract each other. An object with no net charge is referred to as electrically neutral.
This charge is sometimes called the Noether charge. Thus, for example, the electric charge is the generator of the U(1) symmetry of electromagnetism. The conserved current is the electric current. In the case of local, dynamical symmetries, associated with every charge is a gauge field; when quantized, the gauge field becomes a gauge boson. The ...
Charge (basketball), illegal contact by pushing or moving into another player's torso; Charge (ice hockey), illegal contact by taking three or more strides or jumping before hitting an opponent; Charge (fanfare), played at sporting events; Guangzhou Charge, a Chinese esports team in the Overwatch League; Ottawa Charge, a women's hockey team
Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge. Thus, an object's charge can be exactly 0 e, or exactly 1 e, −1 e, 2 e, etc., but not 1 / 2 e, or −3.8 e, etc. (There may be exceptions to this statement, depending on how "object" is defined; see below.)
Greek infantry charge with the bayonet during the Greco-Turkish War of 1897. The development of the bayonet in the late 17th century led to the bayonet charge becoming the main infantry charge tactic through the 18th and 19th centuries and well into the first half of the 20th century. As early as the 19th century, tactical scholars were already ...
A proton by definition carries a charge of exactly 1.602 176 634 × 10 −19 coulombs. This value is also defined as the elementary charge. No object can have a charge smaller than the elementary charge, and any amount of charge an object may carry is a multiple of the elementary charge.
Charge! is an American digital broadcast television network owned by the Sinclair Broadcast Group that airs action and adventure-based programming. It launched on February 28, 2017, and was originally a joint venture with MGM .
When charged particles move in electric and magnetic fields the following two laws apply: Lorentz force law: = (+),; Newton's second law of motion: = =; where F is the force applied to the ion, m is the mass of the particle, a is the acceleration, Q is the electric charge, E is the electric field, and v × B is the cross product of the ion's velocity and the magnetic flux density.