What is the formula for calculating the current (in a system with a 4-20 mA current loop and a resistance (R) of 250 ohms?
A. I = (V – 4)/16
B. I = (V – 20)/(-16)
C. I = V/250
D. I = (V – 250)/(-16)
Answer:A
What is the formula for calculating the current (in a system with a 4-20 mA current loop and a resistance (R) of 250 ohms?
A. I = (V – 4)/16 B. I = (V – 20)/(-16) C. I = V/250 D. I = (V – 250)/(-16)
Explanation: In a system with a 4-20 mA current loop and a resistance (R) of 250 ohms, the current (I) can be calculated using the formula I = (V – 4)/16, where V is the voltage across the loop.