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12.A metallic wire of resistance R is cut into 10 parts of equallength. Two pieces each are joined in series and then five suchcombinations are joined in parallel. What will be the effectiveresistance of this combination. |
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Answer» Resistance of 10 equal parts = 1/10Rresistance of two 1/10 parts joined in series = 1/5Rlet equivalent resistance be Rp1/Rp = 1/1/5R*51/Rp = 25RRp = 1/25R |
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