Home
Class 12
PHYSICS
Two spheres A and B have their radii R a...

Two spheres A and B have their radii R and 2R respectively and charge on sphere A is Q. On connecting A and B by a metallic wire no charge will flow from A to B or vice versa if charge on sphere B is _____________ .

Text Solution

Verified by Experts

2Q, charge will not flow if `V_A= V_B rArr Q/(4pi epsi_0r) = (Q_B)/(4piepsi_0(2r)) rArr Q_B =2 Q`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    U-LIKE SERIES|Exercise TRUE OR FALSE|7 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    U-LIKE SERIES|Exercise ASSERTION-REASON TYPE QUESTIONS|5 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    U-LIKE SERIES|Exercise MULTIPLE CHOICE QUESTIONS|35 Videos

  • ELECTROMAGNETICE INDUCTION

    U-LIKE SERIES|Exercise Self Assessment Test Section -D|1 Videos

  • EXAMINATION PAPER 2020 (SOLVED)

    U-LIKE SERIES|Exercise SECTION D|6 Videos

Similar Questions

Explore conceptually related problems

Two spherical conductors A and B of radii R and 2R respectively are each given a charge Q. When they are connected by a metallic wire. The charge will

Two spheres of equal mass A and B are given +q and -q charge respectively then

Two insulated charged spheres of radii 20 cm and 25 cm respectively and having an equal charge Q are connected by a copper wire, they are separated

Two spheres A and B of radius 4 cm and 6 cm are given charges of 80 muC and 40 muC , respectively. If they are connected by a fine wire, then the amount of charge flowing from one to the other is

There are two spheres of radii R and 2R having charges Q and Q_(2) respectively. These two spheres are connected with a cell of emf V volts as shown in figure. When switch is closed, the final charge on sphere of radius 2R is Q + (8pi epsilon_(0) RV)/(n) . Then find the value of n.

Two spheres of radius a and b respectively are charged and joined by a wire. The ratio of electric field of the spheres is

There are two spheres of radii R and 2R having charges Q and Q//2 , respectively. These two spheres are connected with a cell of emf V volts as show in. When the switch is closed, find the final charge on each sphere.

Statement (A): A solid conducting sphere holds more charge than a hollow conducting hols more charge than a hollow conducting sphere of same radius statement (B): Two sphere A and B are connected by a conducting wire.No charge will flow form A to B when their radii are R and 2R and charge on them are 2q and q respectively

The radii of two metallic spheres P and Q are r_(1) and r_(2) , respectively. They are given the same charge. If r_(1) gt r_(2) then on connecting them with a thin wire, the charge will flow

U-LIKE SERIES-ELECTROSTATIC POTENTIAL AND CAPACITANCE -FILL IN THE BLANKS
  1. A small sphere A of radius r and carrying a charge q is enclosed by a ...

    Text Solution

    |

  2. Capacitance of a spherical conductor of radius r is given as .

    Text Solution

    |

  3. Electric potential at the centre of a spherical shell of radius r and ...

    Text Solution

    |

  4. Potential energy of an electric dipole in a uniform electric field is ...

    Text Solution

    |

  5. The electric potential V at any point x, y, z in space is given by V =...

    Text Solution

    |

  6. Two spheres A and B have their radii R and 2R respectively and charge ...

    Text Solution

    |

  7. When two capacitors C1 and C3 are connected in series, the ratio of ch...

    Text Solution

    |

  8. When two capacitors C1 and C2 are connected in parallel, the ratio of ...

    Text Solution

    |

  9. The plates of a charged parallel plate capacitor attract each other by...

    Text Solution

    |

  10. A 5 muF capacitor is charged to a potential of 100 V and then disconne...

    Text Solution

    |

  11. Two capacitors of a capacitance 3 mu Fand 6mu F respectively are conne...

    Text Solution

    |

  12. Five identical capacitor plates, each of surface area 'A', are arrange...

    Text Solution

    |

  13. The capacitance of a conductor when an earthed conductor is brought n...

    Text Solution

    |

  14. A capacitor of capacitance 8 muF is connected across a 200 V power sup...

    Text Solution

    |

  15. Electric field is always directed to an equipotential surface.

    Text Solution

    |

  16. SI unit of capacitance is .

    Text Solution

    |

  17. A parallel plate capacitor has a capacitance of 6 muF. If the separati...

    Text Solution

    |

  18. We have a charged conductor having a cavity. Electric field inside the...

    Text Solution

    |