Two concentric spheres of radii \( R \) and \( 2 R \) are charged. ...

Two concentric spheres of radii \( R \) and \( 2 R \) are charged. ...

Two concentric spheres of radii \( R \) and \( 2 R \) are charged. The inner sphere has a charge of \( 1 \mu \mathrm{C} \) and the outer sphere has a charge of \( 2 \mu \mathrm{C} \) of the same sign. The potential is \( 9000 \mathrm{~V} \) at a distance \( 3 R \) from the common centre. What is the value of \( R \) ? 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live