Charge

• Electric current = flow of electric charge, only flows when current is complete
• Charge is the current flowing past a point in a given time
• Charge measured in coulombs (C)
• Charge flow (C) = current (A) x time (s)

  Q = It
• Potential difference (V) = current (I) x resistance (R)

  V (V) = I (A) x R (ohm)
• Charge :

  1 ) Q

  2 ) I

  3 ) T

  
• Potential difference :

  1 ) V

  2 ) I

  3 ) R