Physics · 2013
NEET 2013 · 18 May · Code Y · Q106
Two rods are joined end to end, as shown. Both have a cross-sectional area of 0.01 cm^2. Each is 1 meter long. One rod is of copper with a…
Two rods are joined end to end, as shown. Both have a cross-sectional area of $\displaystyle 0.01 \mathrm{~cm}^2$. Each is $\displaystyle 1$ meter long. One rod is of copper with a resistivity of $\displaystyle 1.7 \times 10^{-6}$ ohm-centimeter, the other is of iron with a resistivity of $\displaystyle 10^{-5}$ ohm-centimeter.
How much voltage is required to produce a current of $\displaystyle 1$ ampere in the rods ?Official answer
(2)
0.$\displaystyle 117$ V
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NEET (UG) 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.