Calculate the Current flowing at 3 Kilo Ohm and 330 Ohms Resistance?
Solution:
Current @ 3KiloOhm
BY KVL assume Si=0.7Volts
10V-(3Kiloohm*I3)-(0.7V)=0
Current @3 Kilo Ohm= 3.1mA
V2 Node = Vs-Vdrop @3 Kilo Ohm =
10V-(3.1mA*3Kilo Ohm)= 700 milli Volts
Current @ 330 Ohms
700 milli Volts/ 330 Ohms = 2.12mA
* Note that the simulation by approximation is equivalent to the Calculated values without Internal Resistance on the Diode.
* You may get the actual values per simulation by summing 5 Ohm resistance in KVL loop.
*KVL LOOP WITH INTERNAL RESISTANCE of 5 Ohm
10v-((3KiloOhms+ 5 Ohm)*I3)-(0.7v)=0
I @3Kilo Ohm= 3.0948 mA
V2 NODE= Vs-Vdrop (3 Killo Ohm*3.0948 mA)
V2 Node= 715mV
Current @ 330 Ohms
I@330= 715mV/330 Ohms
I@330= 2.168mA or 2.17mA
