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How do you do this?

  1. Nov 5, 2008 #1
    A coil has a 3.25 ohm resistance and 440 mH inductance. If the current is 3.00 A and is increasing at a rate of 3.60 A/s, what is the potential decrease across the coil at this moment?

    The only equation I know to use is

    emf = - L dI/dt
  2. jcsd
  3. Nov 7, 2008 #2


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    Homework Helper

    Hi Shackleford,

    What would be the emf across a 3.25 ohm resistor in this situation?
  4. Nov 7, 2008 #3
    Hello. Sorry. I took another quick stab at this problem and solved it correctly. I've kind of had a cold/mild flu lately.
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