What is the maximum allowable resistance for a 4 to 20 mA loop powered device with a 24 VDC power supply?
A. 1200 ohms
B. 1000 ohms
C. 800 ohms
D. 600 ohms
Answer:B
What is the maximum allowable resistance for a 4 to 20 mA loop powered device with a 24 VDC power supply?
A. 1200 ohms B. 1000 ohms C. 800 ohms D. 600 ohms
Explanation: The maximum allowable resistance for a 4 to 20 mA loop powered device with a 24 VDC power supply can be calculated using Ohm’s law and the maximum allowable voltage drop of 10 volts.