Step 1:

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Find the Norton equivalent current.

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1. Short the load resistor

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2. Calculate the Short Circuit Current. This is the Norton Current \"\".

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Redraw the circuit :

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Short the terminals A and B to determine the Norton current \"\".
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\"\"

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Use the source transformation to convert the current source to equivalent voltage source.

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Voltage \"\".
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\"\"
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\"\".
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Redraw the circuit :
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\"\"
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Step 2:
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The \"\" and \"\" in series.
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So the total resistance of the circuit is
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\"\"
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\"\"
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\"\".
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Norton current \"\".
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\"\"
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\"\".
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Therefore, Norton current is \"\".
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Solution:
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Norton current is \"\".
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