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Two cylindrical rods of same cross-sect...

Two cylindrical rods of same cross-section area and same length are connected in series to an ideal cell as shown.The resistivity of left rod is `rho` and that if right rod is `2 rho` Then the variation of potential and electric field at any point `P` distant `x` from left end of combined rod system are given by

A

B

C

D

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B
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