Q. 22
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Answer :
Given, i0 =20 μA =20×10-6 A
And temperature, T=300K
a) Forward biasing voltage, V=300mV
According to the current diode equation,
• 
• 
b) Now the current has doubled, i.e. i = 4 A
According to the current diode equation,
• i = i0 (eeV/kT – 1)
• 
• 
• 
Taking log both sides,
• 
• 
• V= 318mV
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