Home
Class 12
PHYSICS
The potential difference across the term...

The potential difference across the terminals of a battery of `emf 12 V` and internal resistance `2 Omega` drops to `10 V` when it is connected to a silver voltameter. Find the silver deposited at the cathode in half an hour. Atomic weight of silver is `107.9 g mol^(-1)`.

Text Solution

Verified by Experts

`V = E-ir`
`10=12-ixx2 implies i=1A`
`m = (Eit)/(F) = (107.9xx1xx30xx60)/(96500) = 2g`.
Promotional Banner

Topper's Solved these Questions

  • THERMAL AND ELECTRIC EFFECT oF CURRENT

    CP SINGH|Exercise Exercises|101 Videos
  • SEMICONDUCTORS

    CP SINGH|Exercise Exercises|140 Videos
  • WAVE NATURE OF LIGHT

    CP SINGH|Exercise EXERCISES|140 Videos

Similar Questions

Explore conceptually related problems

The potential difference between the terminals of a battery of emf 12 V and internal resistance 2Omega drops to 10 V when it is connected to a sliver voltamete. Calculate the silver deposited at the cathode in half an hour. Atomic weight of silver is 107.9g " mole"^(-1)

The potential dofference between the terminals of a battery of emf6.0V and internal resistances 1 (Omega) drops it 5.8 V when connected across an external resistor. Find the resistance of the external resistor.

A battery of emf 2V and internal resistance 0.5(Omega) is connected across a resistance in 1 second?

The potential difference across terminals of cell of 20 V and r = 2 Omega connected to 8 Omega external resistance is

The potential difference across the terminals of a battery is 50 V when 11 A current is drawn and 60 V, when 1A current is drawn . The emf the battery is

A battery of emf 2.0 V and internal resistance 0.10 Omega is being charged with a current of 5.0 A . Find the potential difference between the terminals of the battery?

A car battery of emf 12V and internal resistance 0.05 omega receives a current of 60 A from an external source, then the terminal potential difference of the battery is

A battery of emf 12V and internal resistance 2 Omega is connected two a 4 Omega resistor. Show that the a voltmeter when placed across cell and across the resistor in turn given the same reading

CP SINGH-THERMAL AND ELECTRIC EFFECT oF CURRENT-Exercises
  1. The potential difference across the terminals of a battery of emf 12 V...

    Text Solution

    |

  2. According to Joule's law, if the potential difference across a conduct...

    Text Solution

    |

  3. If the current in an electric bulb drops by 1% the power decreases by

    Text Solution

    |

  4. (a) When a cell sends current through a resistance R(1) for time t, th...

    Text Solution

    |

  5. Two resistances , connected in parallel across a source of negligible ...

    Text Solution

    |

  6. A heating coil transforms 100J of electrical energy into heat energy p...

    Text Solution

    |

  7. A constant voltage is applied between the two ends of a uniform metall...

    Text Solution

    |

  8. You are given a resistance coil and a battery. In which of the followi...

    Text Solution

    |

  9. Two indential heated produce heat H(1) in time t when connected in par...

    Text Solution

    |

  10. A 500W heating unit is designed to operate from a 115 "volt" line. If...

    Text Solution

    |

  11. Three equal resistor connected in series across a source of enf toget...

    Text Solution

    |

  12. A current of 3 A flows through the 2 Omega resistor as shown in the ci...

    Text Solution

    |

  13. A heater coil is cut into two parts of equal length and one of them is...

    Text Solution

    |

  14. The three resistance of equal value are arranged in the different comb...

    Text Solution

    |

  15. For ensuring dissipation of same energy in all three resistors (R(1), ...

    Text Solution

    |

  16. A wire of length L and 3 identical cells of negligible internal resist...

    Text Solution

    |

  17. An electric kettle has two coils. When one coil is switched an it tak...

    Text Solution

    |

  18. An electric kettle has two heating coils. when one coil is used, water...

    Text Solution

    |

  19. An electric kettle of 1200Whas 1 kg water at 20^@C. The water equivale...

    Text Solution

    |

  20. Water of volume 2 litre in a container is heated with a coil of 1kW at...

    Text Solution

    |

  21. The power dissipated 6 Omega resistor is

    Text Solution

    |