Eight identical spherical drops, each having a potential of 9 V are combined together to form a single large drop. The potential of this large drop will be:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 36 V
The potential (V) is,
$V=\frac{kQ}{r}$
$⇒V_{large}=\frac{KQ_{total}}{R}=\frac{K.8Q_0}{2r_0}$
$=4V_0=4×9=36V$