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Two rods are joined end to end. Both...

Two rods are joined end to end. Both have a cross - sectional area of `0.01 cm^(2)` . Each is 1 meter long . One rod is a copper with a resistivity of `1.7 xx 10^(-6)` ohm- centimeter ,the other is of iron with a resistivity 10-5 ohm-centimeter.
How much voltage is required to produce a current of 1 ampere in the rods ?

A

`0.117` V

B

`0.00144 ` V

C

`0.0145 `V

D

`1.7 xx 10^(-6) V`

Text Solution

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The correct Answer is:
A
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