A time varying voltage is applied to the clamps `A` and `B` such that voltage across the capacitor plates is as shown in the figure. Plot the time dependence of voltage across the terminals of the esistance `E` and `D`.

Answer

A

Explanation

From `O` to `A`

. `V_C=at (a="constant")`
`:. q_C=CV_(C)=Cat`
`:. i=(dq_C)/(dt)=aC`
`V_R=iR+aCr="constant"`
From A onwards `V_C=("constant")`
`:. q_("constant")`
`:. i=(dq_c)/(dt)=0`
or `V_r=0`
Therefore `V_R` versus t graph is as showin in figure