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when 24volts is applied across a certain resistor the current produced is 8mA. what voltage is needed to produce a current of 13 mA?
Use Ohms law: V = I*R
1. Find R: R = V/I → 24/0.008 ohms
2. Find new voltage: V = I*R → 0.013*24/0.008 or V = 39 volts