Calculate the area of cross section of a wire of length 2m,its resistance is 25ohm and the resistivity of material of wire is 1.84×10raise to power -6ohm meter.
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Answer:
R= A ρl
⇒A= R ρl
⇒A= 46
1.84×10
−6 ×2
⇒A=8×10 −8 m 2
Explanation:
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