Charge and current

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11 Terms

1
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Current is measured by…

Ammeter (in amps)

2
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Potential diff is measured by…

Voltmeter (in volts)

3
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Current in series…

Is the same in every position.

4
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Voltage in series…

Is shared between components.

5
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Current in parallel…

Is shared between branches.

6
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Voltage in parallel…

Is the same across each component as the output voltage.

7
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Which way around a circuit do electrons travel?

Because early day physicists got it wrong:

  • Conventional current = positive - negative

  • Real life / modern day = negative to positive

    Because electrons are attracted to the positive terminal and repelled by the negative terminal.

8
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What does 1 ampere represent?

6.25 × 10^18 electrons passing a point in a circuit each second.

9
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What does one coulomb of charge contain?

6.25 ×10^18 electrons

10
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What charge does 1 electron have?

1.6 ×10^-19 C

11
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Define charge

No. Of electrons x charge of 1 electron