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20 Cards in this Set
- Front
- Back
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State ohms law |
E=IXR |
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What makes an electrical circuit? |
Load source conductor path |
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In order to get a voltage drop what do you need? |
I=current R= resistance |
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What remains the same in a SERIES circuit? |
Current |
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What remains the same in a parallel circuit? |
Voltage |
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Kirchhoffs voltage law states? |
Voltage across each load must be exactly the same as the voltage supplied by the source |
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Kirchoffs current law states? |
The amount of current flowing away from a point in a circuit is equal to the amount flowing to that poinf |
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What’s required in a circuit? |
Current resistance |
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In AC both voltage and current are given in effective values, what is the product of these effective values called? And what is it expressed in? |
Apparent power Voltamps |
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What is the actual AC power in current when phase is taken into account? What is it measured in? |
True power Watts |
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What’s the ratio of true power to apparent power called? It indicates the amount of current that is in phase with voltage |
Power factor |
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Z = |
Impedance |
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XC= |
Capacitive reactance |
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XL |
Inductive reactance |
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X |
Reactance |
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Pa=IE |
Apparent power Measured in voltamps |
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Pt=Pa x Pf |
True power True power= apparent power x power factor |
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Explain apparent power |
The product of the effective values of both voltage and current in an AC circuit |
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Explain true power |
Actual AC power in current when phase is taken into account. Expressed in watts |
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Explain power factor |
Ratio of true power to apparent power when multiplied by current |
