A parallel plate capacitor with plates of length $l$ is included in a circuit as shown in figure. Given are the emf of the current source, its internal resistance r and the distance d between the plates. An electron with a velocity $V_0$ flies into the capacitor, parallel to the plates as shown. Find the value of resistance $R\left(in\Omega \right)$ which should be connected in parallel with the capacitor so that the electron flies out of the capacitor at an angle of ${37}^0$ to the plates. (Assume that circuit is in steady state).