A pressure measurement system uses a sensor that converts pressure into voltage according to the transfer function, Vp = (.5)(square root of P). This voltage is then converted into a current. As pressure varies from 0 - 100 psi, the current varies from 4 - 20 mA.
A. Find the transfer function equation for the conversion of voltage to current.
P = 0 - 100 psi
I = 4 - 20 mA
2. The attempt at a solution
I would attempt a solution if I knew where to start. The best I can do so far is use the given transfer function of Vp = (.5)(square root of P) to convert pressure into voltage. After that I'm at a loss as to where to get the equation for the conversion of voltage to current. Is there anyone out there that can point me in the right direction?