In an electrical cable there is a single wire of radius 
of copper. Its resistance is 
The cable is replaced by 6 different insulated copper wires, the radius of each wire is 
Now the total resistance of the cable will be
a)
b)
c)
d)
In an electrical cable there is a single wire of radius of copper. Its resistance is The cable is replaced by 6 different insulated copper wires, the radius of each wire is Now the total resistance of the cable will be
a)
b)
c)
d)
Question ID - 150262 | SaraNextGen Top Answer
In an electrical cable there is a single wire of radius of copper. Its resistance is The cable is replaced by 6 different insulated copper wires, the radius of each wire is Now the total resistance of the cable will be
a)
b)
c)
d)
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In an electrical cable there is a single wire of radius |
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a) |
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b) |
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c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (a) -
(a)
Initially : Resistance of given cable
…(i)
Finally : Resistance of each insulated copper wire is
Hence equivalent resistance of
cable 
…(ii)
.png)
on solving equation (i) and (ii), we get 
127 votes
Answer Link
127