Electric Charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.

  1. Positive Charge
  2. Negative Charge


Unlike Charges


Like Charges

Like charges repel and unlike charges attract. An object is negatively charged if it has an excess of electrons, and if otherwise positively charged or uncharged. The SI unit of electric charge is Coulomb(C). In electrical engineering it is also common to use the ampere-hour(Ah), and in chemistry, it is common to use elementary charge(e) as unit.

The symbol Q often denotes charge.