A long wire contains more metal ions for electrons to collide with compared to a short wire, so its resistance is... what?
Question
A long wire contains more metal ions for electrons to collide with compared to a short wire, so its resistance is... what?
Solution
The resistance of a long wire is higher than that of a short wire. This is because the longer the wire, the more metal ions there are for the electrons to collide with, which increases the resistance. Here are the steps to understand this:
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Resistance in a wire is caused by electrons colliding with metal ions, which slows down the flow of electrons and creates resistance.
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A longer wire contains more metal ions than a shorter wire. This is because the length of the wire is directly proportional to the number of metal ions it contains.
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Therefore, in a longer wire, electrons have to travel a greater distance and have more chances to collide with metal ions. This increases the number of collisions, and thus the resistance.
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So, a long wire has a higher resistance than a short wire.
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