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Kirchoff Rule Example

# Kirchoff Rule Example - Kirchoff Rule Example PHY213...

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Kirchoff Rule Example PHY213 1 Example: Applying Kirchhoff’s Rules First, define a current for each leg of your circuit, and draw an arrow indicating the direction of current flow. There are 3 unknowns: I 1 , I 2 , and I 3 , so we will need 3 equations to solve for them Note: You don’t need to get the direction of the current flow right. This is your convention. When you solve the problem, a negative answer simply means the current flows the other way. Example: Applying Kirchhoff’s Rules Apply Kirchhoff’s junction rule to the three wire junction at the bottom of the diagram. Current in = current out Since there are 2 junctions, there is 2-1 = 1 junction rule. 3 1 2 I I I =

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Kirchoff Rule Example PHY213 2 Example: Applying Kirchhoff’s Rules 1) Apply Kirchhoff’s loop rule to the closed path in red, traversing it clockwise 0 I 0 5 I 0 3 V 0 5 2 1 = - - . . . 2) Apply Kirchhoff’s loop rule to the closed path in green, traversing it clockwise Note the sign changes for some of the elements 0 I 0 7 V 0 10 I 0 3 V 0 5 3 1 = - - . . . .
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Kirchoff Rule Example - Kirchoff Rule Example PHY213...

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