What is the effect of increasing the load resistance in a 4 to 20 mA loop?
A. Increases loop voltage
B. Decreases loop voltage
C. Increases loop current
D. Decreases loop current
Answer:B
What is the effect of increasing the load resistance in a 4 to 20 mA loop?
A. Increases loop voltage B. Decreases loop voltage C. Increases loop current D. Decreases loop current
Explanation: Increasing the load resistance in a 4 to 20 mA loop decreases the loop current. This is because the transmitter is designed to provide a fixed current output, and the loop resistance determines the voltage drop across the load. As the load resistance increases, the voltage drop increases, which decreases the loop current.