yoyo13
Aug14-09, 11:11 PM
1. The problem statement, all variables and given/known data
Find Voltage/Current across each diode:
----R---
|..........|
V.........D
|......... |
----R---
Repeat 50x until:
----R----
............|
............D
............|
----R----
V = power source
D = diode
R = wire resistance
. = empty space
2. Relevant equations
for diode:
V = 0.04654 * ln(I/(0.62E-19)) + I*6.97
for wire:
R = pl/A = 0.02 ohms
Final diode voltage = 2V
Final diode current = 20mA
3. The attempt at a solution
Attempted to use v = ir with wire resistance to find voltage over last-1 diode, but did not work out as current got higher as worked back to source.
Find Voltage/Current across each diode:
----R---
|..........|
V.........D
|......... |
----R---
Repeat 50x until:
----R----
............|
............D
............|
----R----
V = power source
D = diode
R = wire resistance
. = empty space
2. Relevant equations
for diode:
V = 0.04654 * ln(I/(0.62E-19)) + I*6.97
for wire:
R = pl/A = 0.02 ohms
Final diode voltage = 2V
Final diode current = 20mA
3. The attempt at a solution
Attempted to use v = ir with wire resistance to find voltage over last-1 diode, but did not work out as current got higher as worked back to source.