The current (I) flowing through the p-n junction diode is given by _________.

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SSC JE Electrical 10 Oct 2023 Shift 2 Official Paper-I
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  1. I0 = I(eqv/ηKT - 1) 
  2. I0= I(eηKT/qv - 1) 
  3. I = I0(eηKT/qv - 1) 
  4. I = I0(eqv/ηKT - 1)

Answer (Detailed Solution Below)

Option 4 : I = I0(eqv/ηKT - 1)
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Detailed Solution

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The correct option is 4

Concept:

Diode current for a forward bias voltage V is given by:

\(I = {I_0}\left( {{e^{\frac{{{V}}}{{\eta {V_T}}}}} - 1} \right)\)

Where η = ideality factor

I0 = Reverse saturation current

VT = KT/q = Thermal voltage

Substituting the value of VT, we get:

I = I0(eqv/ηKT - 1)

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