The current $I$ in the circuit shown below is: (All diodes are ideal and identical)

The current-voltage relation of a diode is given by $I = \left( {{e^{\frac{{1000V}}{T}}} - 1} \right) \, mA$,where the applied voltage $V$ is in volts and the temperature $T$ is in Kelvin. If a student makes an error of $\pm 0.01 \, V$ while measuring the voltage to obtain a current of $5 \, mA$ at $300 \, K$,then the error in the value of the current in $mA$ is.....$mA$

In a $p-n$ junction diode,the direction of diffusion current is from

When and why is a $p-n$ junction called forward biased? Describe the changes that occur under such bias.

In a forward biased $p-n$ junction diode,the potential barrier in the depletion region will be of the form:

For the diode,the characteristic curves are given at different temperatures. The relation between the temperatures is