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 Subject: calculating L Category: Science > Physics Asked by: kzb-ga List Price: \$3.00 Posted: 06 Jun 2006 13:59 PDT Expires: 06 Jul 2006 13:59 PDT Question ID: 735859
 ```Is it possible to calculate L for choke when I measure voltage for current? Could you give me formula``` Clarification of Question by kzb-ga on 06 Jun 2006 14:10 PDT ```Could you give me formula to calculate L when I have two parameters: voltage and current for EI choke (rectifier)?```
 ```No, you cannot calculate the inductance of a choke simply from a measurement of voltage and current. This will give you the choke's DC resistance (R = V/I), but you are interested in its AC response which is given by L.```
 ```here is a formule; V=L*(dI/dt) As you see current is changing depending on the varying. If you compare the initial state to the final state.Initially current is zero;after a while there appaers a maximum current in the choke;by the way on the ends of the choke the potential is going to be measured as an maximum value too.This potential can be calculated as; V(max)=L*I(max) You can also calculate the potential that will be appeared on the choke any time by using the expression below,if you know the value of current at a certain time. V(t)=L*I(t) V(t) is the voltage appears on the choke at the time=t I(t) is the amount of current passing through the choke at the time=t```