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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does voltage gain represent in an amplifier?
💡 Hint: Think about how an amplifier enhances signals.
Question 2
Easy
How is transconductance (g_m) calculated?
💡 Hint: Consider the currents and voltages related to the transistor.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the formula for voltage gain?
- A_v = V_out / V_in
- A_v = V_in / V_out
- A_v = R_out / R_in
💡 Hint: Think about how the amplifier transforms the input signal.
Question 2
True or False: A voltage gain of 1 indicates no amplification.
- True
- False
💡 Hint: Remember what a buffer does to a signal.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the voltage gain and input impedance for a common collector amplifier given: β = 120, I_C = 1 mA, and r_o = 150 kΩ.
💡 Hint: Convert I_C to g_m first.
Question 2
In a scenario where the load capacitance increases and source resistance is significant, analyze how this affects the bandwidth of the amplifier.
💡 Hint: Remember f_cutoff = 1 / (2πRC); how do varying R and C affect this?
Challenge and get performance evaluation