four essential electrical quantities

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6 Terms

1
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what is charge and what is a coulomb?

  • charge is the amount of electricity an object has.

  • a coulomb is a unit of charge.


2
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how do we represent charge in an equation?

  • Q


3
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what is current and how is it measured?

current is the rate of flow of charge.

4
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how do we represent current in an equation?

  • I


5
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what is voltage and why is it called electrical pressure?

  • Voltage is the push that moves electrons

  • It’s called electrical pressure because it acts like a force that pushes charge through a circuit.


6
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what is electrical power?

  • power is how fast electrical energy is being used or delivered.