Definition

Examples

• 电荷有正负两种。
  diàn hé yǒu zhèng fù liǎng zhǒng.
  Electric charge has two types: positive and negative.
• 导体中的电荷可以自由移动。
  Dǎotǐ zhōng de diàn hé kěyǐ zìyóu yídòng.
  Charge in a conductor can move freely.
• 电流是电荷的定向流动。
  Diànliú shì diàn hé de dìngxiàng liúdòng.
  Electric current is the directional flow of charge.