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Charge & Current

Akoranga 11 Mahi Tuatahi

  1. What are some common carriers of charge?



A conductor is a material through which charge can move freely.




A material through which electrons cannot easily flow


  1. Sharpen the pencil at both ends so the lead is exposed
  2. Connect the two wires to the DC red/black plugs and then to either end of the resistor
  3. Turn the voltage to 12V and switch on the power pack!
  4. Turn off the power pack and then do the same thing with the pencil


\begin{aligned} & I = \frac{q}{t} \newline & \text{I = current measured in what?} \newline & \text{q = charge measure in what?} \newline & \text{t = time measured in what?} \end{aligned}


  1. If $10A$ flows through a wire, how much charge passes a point in $5s$?
  2. A total charge of $0.12C$ passes a point in $5s$. What is the current?
  3. $0.02C$ of charge passed through a resistor in 1 minute. What was the current?
  4. If the current is $0.3A$, how much charge will pass a point in 10 minutes?

What Direction Does Current Flow?

Conventional Current

Conventional Current