Duration: 9:03

2 views

0

There are four concentric shells A, B, C and \( \mathrm{D} \) of radii a, \( 2 \mathrm{a}, 3 \mathrm{a} \) and \( 4 \mathrm{a} \) respectively. Shells \( \mathrm{B} \) and \( \mathrm{D} \) are given charges \( +q \) and \( -q \) respectively. Shell \( \mathrm{C} \) is now earthed. The potential difference \( V_{A}-V_{C} \) is :
\( \mathrm{P} \)
W
(A) \( \frac{\mathrm{Kq}}{2 \mathrm{a}} \)
(B) \( \frac{\mathrm{Kq}}{3 \mathrm{a}} \)
(C) \( \frac{\mathrm{Kq}}{4 \mathrm{a}} \)
(D) \( \frac{\mathrm{Kq}}{6 \mathrm{a}} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live