Posted by **Trevor** on Thursday, February 28, 2013 at 11:00am.

If V volts are measured across a resistance of R ohms in a circuit carrying a current of I amperes, V=IR. At a certain instant, the voltage is 250 and is increasing at a rate of 4 volts/min, while the current is 0.5 AMP and is increasing at a rate of 0.01 amp/min. Find the rate of change of the resistance at that moment.

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