physcs- current and charges

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chapter 21

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8 Terms

1
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what is electric current

a flow of electric charge

2
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what are the three effects of an eletric current

  • a heating effect

  • a chemical effect

  • a magnetic effect

3
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what is a current 

the current is the amount of charge passing per second

Q=IT

4
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what is a direct current

direct current is current that flows in one direction only

5
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what is alternating current

an electric current that reverses direction every 1/100th of a second

6
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sum of currents

the sum of the currents entering a junction equal the sum of the currents leaving the junction

7
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what is a series current

there is only one path for the current to follow

8
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explain current in parallel circuit 

current can follow through more than one path ot can split into different paths