Energy and Electricity

  • Created by: Eesha Dev
  • Created on: 26-06-15 21:16

Electric Current in Circuits

  • current is the flow of charge around a circuit
  • the charge is the electrons (negative)
  • protons (positive) cannot move
  • electrons in a circuit move from positive to negative
  • current is NOT used up
  • electric current is measured in Amperes (A)

Electric Current in Series Circuits

  • current flows through the compartments and back to battery. As it passes through it gives energy to the light bulbs
  • current is the same anywhere in the circuit as it has no choice of route
  • current will stop flowing if there is a break in circuit

Electric Current in Parallel CIrcuits

  • current flows through the components but can choose where to go (branches)
  • the current splits at the junctions
  • readings on ammeter are different but add up to reading on top branch
  • current still flows if there is a break in the circuit

Measuring Electric Current

  • a cell provides energy to power circuit
  • chemical energy in cell changes to electrical energy
  • electrical energy is carried to bulb by charges
  • flow of charge is called electric current
  • light bulb transfers electrical energy to light and thermal energy


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