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What is the fractional change in the resistance of an iron filament when its temperature changes from 28.0∘C to 51.0∘C ? R−R0 R0 =

What is the fractional change in the resistance of an iron filament when its temperature changes from 28.0∘C to 51.0∘C ? R−R0 R0 =

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What is the fractional change in the resistance of an iron filament when its temperature changes from 28.0 ∘ C to 51.0 ∘ C ?
R − R 0 R 0 =
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