In an ideal stable self – alpha cutoff frequency, what should be the current IBwith respect to IC?(a) IB should be 20% of IC(b) IB should be 5% of IC(c) IB should be 10% of IC(d) IB should be 50% of ICThe question was posed to me by my college professor while I was bunking the class.The above asked question is from The Alpha Cutoff Frequency in chapter High Frequency Transistor of Electronic Devices & Circuits

In an ideal stable self – alpha cutoff frequency, what should be the

1.	In an ideal stable self – alpha cutoff frequency, what should be the current IBwith respect to IC?(a) IB should be 20% of IC(b) IB should be 5% of IC(c) IB should be 10% of IC(d) IB should be 50% of ICThe question was posed to me by my college professor while I was bunking the class.The above asked question is from The Alpha Cutoff Frequency in chapter High Frequency Transistor of Electronic Devices & Circuits
Answer» Correct option is (c) IB should be 10% of IC Easy explanation: IDEALLY, the RESISTOR values are designed in a way that the VOLTAGE drop across RE is approximately 10% of Vcc and IB should be 10% of Ic. Hence, stable self – alpha cutoff frequency work best at low power supply VOLTAGES.

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