Practice Current Relation (9.7.4) - Electronic Devices - ICSE 12 Physics

Practice: Current Relation

Lesson 9.7.4Electronic Devices

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9 questions

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6 sample questions

Question 1.
What are the three main currents in a junction transistor?
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Think about the names of the transistor terminals.
Question 2.
In a BJT, if I_B = 2 mA and β = 50, what is I_C?
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Use the formula I_C = β * I_B.
3Question 3.
What is the formula for calculating collector current in a BJT?
- I_C = I_E + I_B
- I_C = β * I_B
- I_C = I_B - I_E
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Focus on how the base current affects the collector current.
4Question 4.
True or False: The emitter current is always greater than the collector current in a BJT.
- True
- False
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Consider how currents add up at the emitter.
Question 5.
If a BJT has a current gain of 200 and a base current of 0.1 mA, calculate the I_C, I_E, and what could happen to I_C if I_B is reduced by half.
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Apply the relationships we discussed and remember how changes affect output.
Question 6.
A particular BJT circuit needs to switch under very low base current. If I_B drops to 0.2 mA with a β value of 50. Determine I_C and implications for the circuit if the devices are designed for 30 mA.
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Evaluate if the base current is sufficient for the collector needs.

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