Two conducting spheres of radii $R_1$ and $R_2$ are charged with charges $Q_1$ and $Q_2$ respectively. On bringing them in contact there is
Two conducting spheres of radii $R_1$ and $R_2$ are charged with charges $Q_1$ and $Q_2$ respectively. On bringing them in contact there is
- A
always a decrease in energy of the system
- B
an increase in the energy of the system if $Q_1R_2 \neq Q_2R_1$
- C
no change in the energy of the system
- D
a decrease in energy of the system if $Q_1R_2 \neq Q_2R_1$
Similar Questions
In a certain charge distribution, all points having zero potential can be joined by a circle $S$. Points inside $S$ have positive potential and points outside $S$ have negative potential. A positive charge, which is free to move, is placed inside $S$
In a certain charge distribution, all points having zero potential can be joined by a circle $S$. Points inside $S$ have positive potential and points outside $S$ have negative potential. A positive charge, which is free to move, is placed inside $S$
The potential at a point, due to a positive charge of $100\,\mu C$ at a distance of $9\,m$, is
The potential at a point, due to a positive charge of $100\,\mu C$ at a distance of $9\,m$, is
A conducting sphere of radius $R$ is given a charge $Q.$ The electric potential and the electric field at the centre of the sphere respectively are
A conducting sphere of radius $R$ is given a charge $Q.$ The electric potential and the electric field at the centre of the sphere respectively are
- [AIPMT 2014]
Write an equation for potential due to a system of charges
Write an equation for potential due to a system of charges
Define electric potential and explain it. Write its $\mathrm{SI}$ unit and give its other units.
Define electric potential and explain it. Write its $\mathrm{SI}$ unit and give its other units.