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Posted by on Thursday, May 20, 2010 at 11:09pm.

your electronics friend needs a 20-ohm resistor but has only 40-ohm resistors. He tells you that he can combine them to produce a 20-ohm resistor. how?

  • Physics - , Friday, May 21, 2010 at 12:57am

    in parallel.

    1/40 + 1/40 = 1/20

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