Current $I$ is flowing through the two materials having electrical conductivities $\sigma_1$ and $\sigma_2$ respectively $(\sigma_1 > \sigma_2 )$ as shown in the figure. The total amount of charge at the junction of the materials is
  • A$I \in_0 (1/ \sigma_2 - 1/\sigma_1)$
  • B$\frac{{I{ \in _0}(1/{\sigma _2} - 1/{\sigma _1})}}{4}$
  • C$4I \in_0 (1/\sigma_2 - 1/\sigma_1 ) $
  • D
    none of these
Medium
art

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