When You Have P-Type Silicon and N-Type Silicon Joined Together

question 6

Multiple Choice

When you have p-type silicon and n-type silicon joined together, why don't electrons dislodged by light in the n-type cross the junction barrier and enter the p-type?

• A)The junction barrier is unidirectional. Electrons can only move from the p-type to the n-type silicon through the junction.
• B)The photoelectric effect causes a charge buildup which prevents the flow of electrons in either direction across the junction barrier.
• C)The boron in p-type silicon's crystal lattice must maintain its "electron holes" as bonding sites. This prevents the electrons dislodged by light in n-type silicon from crossing the junction barrier.
• D)The arsenic in n-type silicon has an extra valence electron whereas the boron in p-type silicon is missing one. This difference inhibits the electrons dislodged by light in the n-type from crossing the junction barrier.

Determine the estimated direct labor cost.

Calculate the estimated net operating income or loss.

Compute the inventory balance of raw materials by the end of the month.

Ascertain the total number of units produced over a period.

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