Eight identical spherical drops, each having a potential of 9V, are combined together to form a single large drop. The potential of this large drop will be:
36 V
When n identical drops combine, the potential of the new large drop is given by:
Vnew = n1/3 Vsmall.
Given n = 8 and Vsmall = 9V:
Vnew = 81/3 × 9V = 2 × 9V = 36V.
Thus, the correct answer is (c).
Important Questions from Electrostatic Potential and Capacitance
A copper ball of density 8.0 g/cc and 1 cm in diameter is immersed in oil of density 0.8 g/cc. The charge on the ball if it remains just suspended in oil in an electric field of intensity 600π V/m acting in the upward direction is:
A metal wire is subjected to a constant potential difference. When the temperature of the metal wire increases, the drift velocity of the electrons in it:
A cube of side 'a' has a charge Q at each of its vertices. What is the potential due to this charge array at the centre of the cube?
A parallel plate capacitor with air between the plates has a capacitance of 6pF. What will be the capacitance if the distance between the plates is reduced to half and the space is filled with a dielectric constant 5?
What is the unit of electric flux in terms of the base units of SI?
