Half the space between two concentric electrodes of a spherical capacitor is filled with uniform isotropic dielectric with permittivity ε. The charge of the capacitor is q. Find the magnitude of electric field strength between the electrodes as a function of distance r from center of electrode.
Answer → E = q/2∏εo(ε + 1)r2
V1 - V2 = -∫E.ds
The Attempt at a Solution
I tried to find the potential diference between electrod using above equation but its not working