Question

27 spherical drops each of radius 3 mm are carrying 10 to the power minus 12 columns of charge are combined to form a single drop find the capacitance and potential of the bigger drop​t

Answer 1

Volume of single big drop = Volume of 1000 small drops. 43πR3=(43πr3)×1000 where R is the radius of big drop and r is the radius of small drop. ... (1). We know that electric potential on surface of sphere (drop) is. Vs=kqr ... of big drop Cb=Rk ........(3). From (2) and (3) we have. Cbc=Rr. Using (1) we get.