Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes

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Q: 33 (CDS-I/2018)
Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire
2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes
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question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,5,10,6,2,5,2

keywords: 

{'metallic wires': [0, 0, 0, 1], 'total resistance': [0, 0, 0, 3], 'resistance': [0, 0, 1, 2], 'wires': [0, 0, 1, 1], 'copper': [1, 0, 1, 1], 'wire': [0, 0, 7, 16], 'same length': [0, 1, 0, 2], 'radius': [0, 0, 2, 2], 'series': [0, 1, 1, 0], 'half': [5, 2, 5, 2]}