In reality, wires do not have zero resistance. Where does the resistance of wires come from, and what factors affect it? Select two different wire materials explain why they would have different resistances.   Batteries do not have zero resistance either. What causes the internal resistance in batteries? Since grid-stabilizing batteries are a huge industry, provide an example of an alternate battery design that mitigates these internal resistances, or one for which the resistances are useful.

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Question are below here:

In reality, wires do not have zero resistance. Where does the resistance of wires come from, and
what factors affect it? Select two different wire materials explain why they would have different
resistances. 
 Batteries do not have zero resistance either. What causes the internal resistance in batteries?
Since grid-stabilizing batteries are a huge industry, provide an example of an alternate battery
design that mitigates these internal resistances, or one for which the resistances are useful.