What is the current through each ideal diode in this circuit?

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The discussion focuses on calculating the current through each ideal diode in a given circuit with a 10 kΩ resistor. The first calculation yields a current of 1.13 mA, while the second shows 0 mA due to reverse bias. The third calculation is corrected from 1.43 mA to 0.7 V across the diode and resistor, resulting in a current of 1.0 mA instead. The final calculation results in 0.13 mA for the last diode. The participants confirm the accuracy of the calculations except for the correction needed in the third scenario.
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Homework Statement



find current through each diode, suppose that they are ideal (use the second approach)

[PLAIN]http://img30.imageshack.us/img30/102/86772682.jpg R is 10kohms

The Attempt at a Solution



a) (12-0.7)/10k = 1.13 mA

b) 0 because diode will be open, actually i added up the two voltate sources and i have a voltage source of 16Volts where + is connected with diodes - and - is connected with diodes + so its reverse biased, hence current will be 0

c) i added up the voltage sources i have 10 volts and its not reversed biased diodes voltage source will be 0.7

hence

(15-0.7)/10k = 1.43 mA

d) added up voltage sources i had a source of 2 volts

hence

(2-0.7)/10000 = 0.13mA

am i correct?
 
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Yeah a,b and d are correct, but in (c), the voltage across diode and resistor is 10 v and not 15 v as you have put in the equation.
 
n.karthick said:
Yeah a,b and d are correct, but in (c), the voltage across diode and resistor is 10 v and not 15 v as you have put in the equation.

you are right, thanks a lot :))
 
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