1) What is the 1) highest ,2) the lowest total resistance that can be secured by combination of four coils of resistance 4 ohms , 8 ohms , 12 ohms and 24 ohms ?
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2) A metalic wire of resistance R is cut in ten parts of equal length . Two pieces each age joined in series and then five such combination are joined in parallel . What will be the effective resistance in such case ?
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