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level: Current and Potential Difference

Questions and Answers List

level questions: Current and Potential Difference

QuestionAnswer
What is Current?-This is the Rate of flow of Electric Charges or Electrons in a Circuit. -Current only happens [in an Electrical Component] if Potential Difference is Present, and if the Circuit is Complete [No Gaps] -Current is Also the Rate of Flow of Charge -Units is: Ampere [A]
What is Potential Difference?-This is the Force that pushed the Current around pretty much -Cells, Batteries and Power Supplies give that Potential Difference -Potential Difference in an Electrical Component [Motor for an Example] is really the x Amount of Energy Transferred by That Electrical Component [This case, Kinetic Energy Store] Per Unit of Charge -Potential Difference is often Named Voltages. Exactly the Same Thing -Units is: Volts [V]
What is Resistance?-This measures how Easily the Charge can Flow -Units is: Ohm [Ω]
What happens if you have a High Potential Difference? [in terms of current]-The Current will also follow suit [it will get Higher] -[Usually]
What happens if you have High Resistance of a Component?-The Current will be Smaller [Potential Difference will be the Same]
What does the Total Charge [through a Circuit] Depend on?It relies on the Current and Time
Formula of Charge Rearrange it to Time=-Charge[C] = Current [A]x Time [s] -Time [s] = Charge [C] .................------------------- ...................Current [A]
Samantha has a Battery that has a Current of 0.25 Amps. Over 4 Hours, how much Charge does the Batter Transfer?-First Convert the Units [4H=14400s] -Now use the Formula [C=A x T] -Subsite what you Know into the Formula, and Complete it [C=14400 x 0.25] [C=3600]
What exactly is Charge?-Charge is simply the x Amount of Current flowing In a Current flowing Past a Point in a Certain Amount of Seconds.
What is the Formula of Energy Transferred? Rearrange it to Charge=-Energy Transferred [J or E] = Charge [C or Q] x Potential Difference [V] -Charge [C or Q] = Energy Transferred [J or E] .........................--------------------------------- ............................Potential Difference [V]