If this circuit is used to energize 1-H coil with 1 A of current...?
then allows the inductor to discharge through a 2 ohm resistor. how do determine the time constant and resistor current after the switch is opened for 1 second? I think i would do T=L/R for the time constant but i'm not sure

http://static.panoramio.com/photos/medium/95401143.jpg

Question

If this circuit is used to energize 1-H coil with 1 A of current...?
then allows the inductor to discharge through a 2 ohm resistor. how do determine the time constant and resistor current after the switch is opened for 1 second? I think i would do T=L/R for the time constant but i'm not sure

http://static.panoramio.com/photos/medium/95401143.jpg

anonymous · Answer

@Fifciol @radar

radar · Answer

|dw:1377781499336:dw|.  Your equation for the time constant (tau) is correct.  The time constant = 1 H/2 Ohm or 1/2 second.