Mathematics: 2. The electrical resistance R of a wire varies inversely with the square of its diameter d. If a wire with a diameter of 3 millimeters has a resistance of 0.4 ohm, find the resistance of a wire having the same length and a diameter of 8 millimeters.

2. The electrical resistance R of a wire varies

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Fairy1108789

07.02.2022

I believe the resistance of the new wire with a diameter of 8 will be 1.06 repeating or 1.07 ohms rounded up. 0.4 ohms divided by 3 millimeters is roughly 0.13 so 0.13 times 8 is roughly 1.06 or 1.07 rounded up.

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Ответ:

whitan8586

05.01.2021

Mathematics

2689.136 so it's would be the third one you are correct

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2. The electrical resistance R of a wire varies inversely with the square of its diameter d. If a wire with a diameter of 3 millimeters has a resistance of 0.4 ohm, find the resistance of a wire having the same
length and a diameter of 8 millimeters.

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