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Question 6A copper wire has diameter 0.5 mm and resistivity of 1.6×10−8 Ω m. What will be the length of this wire to make its resistance 10 Ω ? How much does the resistance change if the diameter is doubled?

Answer» Question 6

A copper wire has diameter 0.5 mm and resistivity of 1.6×108 Ω m. What will be the length of this wire to make its resistance 10 Ω ? How much does the resistance change if the diameter is doubled?


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