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a wire of length of 10 cm has resistance 4 ohm if the wire is stretched to double to length find its new resistance?​

By Valentina

a wire of length of 10 cm has resistance 4 ohm if the wire is stretched to double to length find its new resistance?​

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Valentina

√5-1/√5+1 + √5+1/√5-1 = a+b√5.

Find the values of a and b.

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