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A 10 cm wire of resistance 30 Ω is stretched to 25 cm, if the thickness of the wire is reduced by 25% in the process, what is the approximate percentage change in the resistance? (Include the sign)344.43 |
Answer» A 10 cm wire of resistance 30 Ω is stretched to 25 cm, if the thickness of the wire is reduced by 25% in the process, what is the approximate percentage change in the resistance? (Include the sign)
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