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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define voltage gain in the context of an amplifier.
π‘ Hint: Think about how voltage is amplified in a circuit.
Question 2
Easy
What does the negative sign in the voltage gain formula indicate?
π‘ Hint: Recall the phase relationship between input and output.
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 the voltage gain of a common emitter amplifier?
- A = -g_m * R_C / (1 + g_m * R_E)
- A = g_m * R_C / (1 - g_m * R_E)
- A = g_m * R_E / R_C
π‘ Hint: Look for the relationship between transconductance and the resistors involved.
Question 2
True or False: A larger emitter resistor will always increase voltage gain.
- True
- False
π‘ Hint: Consider the effects of component values on gain.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Determine the effects on voltage gain if you increase $R_E$ from 1kΞ© to 10kΞ©, while keeping $g_m$ and $R_C$ constant. Explain your reasoning.
π‘ Hint: Consider how changing resistances affects the gain formula.
Question 2
If an amplifier circuit has a fixed input signal and you modify the output load resistance, what will be the impact on the voltage gain? Discuss the underlying principles.
π‘ Hint: Think about the output characteristics and load effect in circuits.
Challenge and get performance evaluation