When two isolated conductors $A$ and $B$ are connected by a conducting wire positive  charge will flow from :-
Medium
Download our app for free and get startedPlay store
Charge always flows from higher potential body to lower potential body

Hence, $\mathrm{V}_{\mathrm{A}}=\frac{30}{10}=3 \mathrm{\,V} \Rightarrow \mathrm{V}_{\mathrm{B}}=\frac{20}{5}=4 \mathrm{\,V}$

As $\mathrm{V}_{\mathrm{B}}>\mathrm{V}_{\mathrm{A}}$

art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    Each plate of a parallel plate capacitor has a charge $q$ on it. The capacitor is now connected to a battery. Now,
    View Solution
  • 2
    Each plate of a parallel plate capacitor has a charge $q$ on it. The capacitor is now connected to a battery. Now,
    View Solution
  • 3
    Five identical plates each of area $A$ are joined as shown in the figure. The distance between the plates is $d$. The plates are connected to a potential difference of $V\;volts$. The charge on plates $1$ and $4$ will be
    View Solution
  • 4
    A variable condenser is permanently connected to a $100$ $V$ battery. If the capacity is changed from $2\,\mu \,F$ to $10\,\mu \,F$, then change in energy is equal to
    View Solution
  • 5
    Some charge is being given to a conductor. Then its potential is
    View Solution
  • 6
    Two conducting spheres of radii $5\, cm$ and $10\, cm$ are given a charge of $15\,\mu C$ each. After the two spheres are joined by a conducting wire, the charge on the smaller sphere is.......$\mu C$
    View Solution
  • 7
    Five capacitors together with their capacitances are shown in the adjoining figure. The potential difference between the points $A$ and $B$ is $60\, volt.$ The equivalent capacitance between the point $A$ and $B$ and charge on capacitor $5\,\mu F$ will be respectively :-
    View Solution
  • 8
    $A B C$ is a right angled triangle situated in a uniform electric field $\vec{E}$ which is in the plane of the triangle. The points $A$ and $B$ are at the same potential of $15 \,V$ while the point $C$ is at a potential of $20 \,V . A B=3 \,cm$ and $B C=4 \,cm$. The magnitude of electric field is (in $S.I.$ Units)
    View Solution
  • 9
    We have three identical metallic spheres $A, B$ and $C$. $A$ is given a charge $Q$, and $B$ and $C$ are uncharged. The following processes of touching of two spheres are carried out in succession. Each process is carried out with sufficient time.
    $(i)$ $A$ and $B$      $(ii)$ $B$ and $C$
    $(iii)$ $C$ and $A$      $(iv)$ $A$ and $B$
    $(v)$ $B$ and $C$
    The final charges on the spheres are
    View Solution
  • 10
    Two plates are at potentials $-10\, V$ and $+30\, V$. If the separation between the plates be $2\, cm$. The electric field between them is.......$V/m$
    View Solution