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Old Nov 17th 2008, 03:57 AM   #1
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Join Date: Aug 2008
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Red face A little Electromagnetism needed...

Let me write down the xact problem as it is...

A solenoid has a inductance of 50 'henrys' & a resistance of 30 'ohms'. If it is connected to a 100 V battery, how long will it take for the current to reach 1/3rd of its final equilibrium value.
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