CONCEPT:The common EMITTER current gain (β) is the ratio of the collector current (IC) to the base current (IB).\(\beta = \frac{{{I_C}}}{{{I_B}}}\)The common base current gain (α) is the ratio of the collector current (IC) to the emitter current (IE).\(\ALPHA = \frac{{{I_C}}}{{{I_E}}}\)The relationship between α and β is given by,\(\alpha = \frac{\beta }{{\beta + 1}}\)IC = α IE\({I_C} = \frac{\beta }{{\beta + 1}}{I_E}\)As β is very high, IC ≈ IECalculation:Given that, β = 50\(\alpha = \frac{{50}}{{50 + 1}} = 0.98\)