electrical charge and current

• • electrical current is a flow of electrical charge
  • for electrical charge to flow through a closed circuit, there must be a source of potential difference
• Q = I x T

  • Q - charge flow (coulomb)
  • I - current (amps)
  • T - time (seconds)
  • more charge passes around a current when a larger current flows
  • current has the same value everywhere in a single closed loop