What is the minimum allowable loop resistance for a 4 to 20 mA loop powered device with a 12 VDC power supply?
A. 500 ohms
B. 600 ohms
C. 750 ohms
D. 1000 ohms
Answer:A
What is the minimum allowable loop resistance for a 4 to 20 mA loop powered device with a 12 VDC power supply?
A. 500 ohms B. 600 ohms C. 750 ohms D. 1000 ohms
Explanation: The minimum allowable loop resistance for a 4 to 20 mA loop powered device with a 12 VDC power supply can be calculated using Ohm’s law and the minimum current of 4 mA.