A transistor is operated in common-emitter configuration at <img alt="\mathrm{V_c=2 \mathrm{~V}}" src="https://entrancecorner.oncodecogs.com/gif.latex?%5Cmathrm%7BV_c%3D2%20%5Cmathrm%7B%7EV%7D%7D"
A transistor is operated in common-emitter configuration at such that a change in the base current from produces a change in the collector current from to . The current gain is