When the diameter of a wire is tripled its resistance becomes:
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1
Answer:
9th part of previous resistance
Explanation:
Answered by
0
Answer:
when the diameter is tripled,resistance decreases by 9 times.
Explanation:
when the diameter is tripled,the radius is also tripled as d=2r and area becomes 9 times of that of the previous area as area=πr². (3r)²=9r²
And as resistance=(f×l)/A where f is rho
so resistance decreases by 9 times of that of of the previous value.
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