Consider the constant current source shown in the figure below. Let $\beta$ represent the current gain of the transistor.
The load current $I_0$ through $R_L$ is
- $I_0 = \bigg( \frac{\beta+1}{\beta} \bigg) \frac{V_{ref}}{R}$
- $I_0 = \bigg(\frac{\beta}{\beta+1}\bigg) \frac{V_{ref}}{R}$
- $I_0=\bigg (\frac{\beta+1}{\beta} \bigg ) \frac{V_{ref}}{2R}$
- $I_0 = \bigg (\frac{\beta}{\beta+1} \bigg) \frac{V_{ref}}{2R}$