Consider a p-n junction diode having the characteristic `i=i_0(e^(eV//kT)-1)`where `i_0=20(mu)A`. The diode is operated at T=300K. (a) Find the current through the diode when a voltage of 300 mV is applied across it in forward bias, (b) At what voltage does the current double?

Explanation

To solve the problem step by step, we will break it down into two parts as per the question.

### Part (a): Find the current through the diode when a voltage of 300 mV is applied.

1. **Identify the given values**:
- \( I_0 = 20 \, \mu A = 20 \times 10^{-6} \, A \)
- Voltage \( V = 300 \, mV = 300 \times 10^{-3} \, V \)
- Temperature \( T = 300 \, K \)
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