For current to flow in an NPN silicon...

Question 1 of 20

For current to flow in an NPN silicon transistor’s emitter-collector junction, the base must be:

At least 0.4 volts positive with respect to the emitter.

At a negative voltage with respect to the emitter.

At least 0.7 volts positive with respect to the emitter.

At least 0.7 volts negative with respect to the emitter.

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Question 1 / 20Jos33ipBCeRGOekFbJqg

Question 1 of 20Jos33ipBCeRGOekFbJqg

For current to flow in an NPN silicon transistor’s emitter-collector junction, the base must be:

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Question 1 of 20

Jos33ipBCeRGOekFbJqg

For current to flow in an NPN silicon transistor’s emitter-collector junction, the base must be:

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🔍 Key Concepts

• NPN transistor biasing – how the base-emitter junction must be biased for conduction • Typical silicon diode forward voltage values • Difference between silicon and germanium junction voltages

💭 Think About

• Think about the base-emitter junction of an NPN transistor as if it were a diode. In which direction must it be biased for current to flow? • What is the typical forward voltage drop across a silicon junction when it begins to conduct significantly? • Which answer choices match both the correct polarity and a realistic voltage for a silicon base-emitter junction?

✅ Before You Answer

• Confirm the correct polarity of the base relative to the emitter in an NPN transistor for normal operation • Verify the typical forward voltage of a silicon junction (not germanium) when it is conducting • Eliminate any options that have the wrong sign (positive vs. negative) or an unrealistic threshold voltage for silicon

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Question 1 of 20

For current to flow in an NPN silicon transistor’s emitter-collector junction, the base must be:

At least 0.4 volts positive with respect to the emitter.

At a negative voltage with respect to the emitter.

At least 0.7 volts positive with respect to the emitter.

At least 0.7 volts negative with respect to the emitter.

Loading interactive features...

Question 1 / 20Jos33ipBCeRGOekFbJqg

Question 1 of 20Jos33ipBCeRGOekFbJqg

For current to flow in an NPN silicon transistor’s emitter-collector junction, the base must be:

Back

Question 1 of 20

Jos33ipBCeRGOekFbJqg

For current to flow in an NPN silicon transistor’s emitter-collector junction, the base must be:

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed

For current to flow in an NPN silicon...