Electric Current

  • Due Nov 17, 2016 at 8:59am
  • Points 2
  • Questions 2
  • Available until Nov 17, 2016 at 8:59am
  • Time Limit None
  • Allowed Attempts Unlimited

Instructions

Watch the following video lecture segment:

http://youtu.be/fdQfo8MqPKw

[PDF of Slides]

Summary:

• Electric current is the flow of electrical charges (usually electrons).
• Current depends on voltage and resistance.
• Electrical conductors have low resistance; electrical insulators have high resistance.
• By Ohm’s law, for a given voltage the current increases as the resistance decreases.
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