Parallel circuits

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6 Terms

1
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How is a parallel circuit different from a series circuit? 

Parallel circuits have multiple branches; series circuits have one single path.

2
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How do you calculate branch current using Ohm’s law? 

Use I = V/R for each branch separately.

3
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What is the formula for effective resistance in a parallel circuit? 

1/Reff = 1/R1 + 1/R2 …

4
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Why is the effective resistance of parallel resistors lower than any individual resistor? 

Adding branches gives current more paths, reducing total opposition.

5
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How do you calculate total current in a parallel circuit? 

Add all branch currents: Itotal = I1 + I2 …

6
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Why do parallel circuits draw more current than equivalent series circuits?

Lower effective resistance means more current for the same voltage.