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Q. 4

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
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Short Answer

Electrons flow through a diameter aluminum wire at . How many electrons move through a cross-section of the wire each day?

The number of electrons moves through a cross-section of the wire each day is

See the step by step solution

Step by Step Solution

Step 1: Given Information

Aluminum wire diameter

Time

Step 2: Explanation

The electron density is given as,

Where is the area of the cross-section.

Number of electrons passing in time , the electron density is by,

The number of electrons as

Substituting the expression for the electron intensity,

Simplify the expression,

Step 3: Final Answer

Hence, the number of electrons move through a cross-section of the wire each day is

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