Home
Class 12
PHYSICS
What is the difference between electromo...

What is the difference between electromotive force and terminal voltage of a cell? How are they related with each other.

Text Solution

Verified by Experts

(i) emf not depends on current and internal resistance of cell while terminal potential difference depends.
(ii) emf is the potential difference when no current related to cell, while terminal potential difference is the potential difference when some current relates to cell.
(iii) emf is constant for a given cell while terminal potential difference depends on circuit connected to cell. It may different for a given cell.
Promotional Banner

Topper's Solved these Questions

  • Electrical Instrument

    MOTION|Exercise EXERCISE -1|43 Videos

  • Electrical Instrument

    MOTION|Exercise EXERCISE -2|21 Videos

  • ELASTICITY AND THERMAL EXPANSION

    MOTION|Exercise Exercise - 4 (Level-II)|11 Videos

  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-4| Section B (Prevous Years Problems )|29 Videos
MOTION-Electrical Instrument -EXERCISE -3
  1. What is the difference between electromotive force and terminal voltag...

    Text Solution

    |

  2. The resistance of an ammeter is 13 Omega and its scale is graduated fo...

    Text Solution

    |

  3. A galvanometer of resistance 50 Omega is connected to a battery of 3 ...

    Text Solution

    |

  4. A galvanometer having a coil resistance of 60 Omega shows full scale...

    Text Solution

    |

  5. The resistance in the two arms of the meter bridge are 5 Omega and R O...

    Text Solution

    |

  6. A potentiometer circuit has been setup for finding. The internal resis...

    Text Solution

    |

  7. In a ammeter 0.2% of main current passes through the galvanometer. If ...

    Text Solution

    |

  8. If an ammeter is to be used in place of a voltmeter, then we must conn...

    Text Solution

    |

  9. The length of a wire of a potentiometer is 100 cm, and the e.m.f. of i...

    Text Solution

    |

  10. An ammeter reads upto 1 ampere. Its internal resistance is 0.81 ohm. T...

    Text Solution

    |

  11. In a meter bridge experiment null point is obtained at 20 cm. from one...

    Text Solution

    |

  12. In a potentiometer experiment the balancing with a cell is at length 2...

    Text Solution

    |

  13. In a Wheatstone's bridge, three resistances P,Q and R connected in the...

    Text Solution

    |

  14. Shown in the figure below is a meter- bridge set up will null deflecti...

    Text Solution

    |

  15. The current in the primary circuit of a potentiometer is 0.2 A. The sp...

    Text Solution

    |

  16. On interchanging the resistances, the balance point of a meter bridge ...

    Text Solution

    |

  17. In a potentiometer experiment it is found that no current passes throu...

    Text Solution

    |