Home
Class 12
PHYSICS
For charging a battery of emf E1 , anoth...

For charging a battery of emf `E_1` , another battery of emf `E_2 (E_2 gt E_1)` is connected with their positive terminals connected together. Due to this , direction of current in battery with emf `E_1` is revorsed .
Does it mean that the emf is also reversed ? Give reason.

Text Solution

Verified by Experts

No. the direction of emf polarity will not reverse. The net emf in the circuit i.e `E_2 -E_1` will determine the direction of current but it never reverses the individual emfs of the batteries.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise TOUGH AND TRICKY PROBLEMS|23 Videos
  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise NCERT SOLVED (NCERT Textbook Exercises)|13 Videos
  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise PRACTICE PROBLEMS|71 Videos
  • ATOMS

    MODERN PUBLICATION|Exercise Chapter Practice Test|16 Videos
  • DUAL NATURE OF RADIATION AND MATTER

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|15 Videos

Similar Questions

Explore conceptually related problems

The terminal voltage across a battery of emf E can be

Internal resistance of battery of emf 2E is R_1 and battery of emf E is R_2 . If the potential difference across the cell of emf 2E is zero, then value of R is

A battery of emf 15 V and internal resistance of 4Omega is connected to a resistor. If the current in the circuit is 2A and the circuit is closed. Resistance of the resistor and terminal voltage of the battery will be

A battery is of emf E is being charged from a charger such that positive terminal of the battery is connected to terminal A of charger and negative terminal of the battery is connected to terminal B of charger. The internal resistance of the battery is r .

A battery of emf E and internal resistance r is connected to a variable resistor R as shown in figure. Which one of the following is true ?

A battery of e.m.f. E and internal resistance r is connected to a variable resistor R as shown here. Which one of the following is true

MODERN PUBLICATION-CURRENT ELECTRICITY-CONCEPTUAL QUESTIONS
  1. The drift velocity of electrons inside a conductor carrying current is...

    Text Solution

    |

  2. A number of identical light bulbs are connected to a battery. Will the...

    Text Solution

    |

  3. For charging a battery of emf E1 , another battery of emf E2 (E2 gt E1...

    Text Solution

    |

  4. A warning of high voltage is usually displayed instead of high curren...

    Text Solution

    |

  5. Suppose your car's headlights are turned on when you start the ignitio...

    Text Solution

    |

  6. A resistor consists of four identical metal strips connected as shown ...

    Text Solution

    |

  7. What is thermal motion of free electrons ? Why does it not amount to a...

    Text Solution

    |

  8. Arrange aluminum, silver copper and iron in the increasing order of co...

    Text Solution

    |

  9. give examples of materials whose electrical resistivity decreases with...

    Text Solution

    |

  10. What is the effect of temperature on the resistivity of alloys ?

    Text Solution

    |

  11. What is a fuse wire ?

    Text Solution

    |

  12. Explain that magniture of current which can melt a fuse wire is indepe...

    Text Solution

    |

  13. Why does the resistivity of metal increase with an increase in tempera...

    Text Solution

    |

  14. Explain free electron model of conduction.

    Text Solution

    |

  15. Name the charge carriers responsible for conduction of electricity in ...

    Text Solution

    |

  16. Why is Manganin one of the preferred materials to make standard resist...

    Text Solution

    |

  17. How do you differentiate between an ohmic and a non-ohmic resistor ?

    Text Solution

    |

  18. Can we say that all free electrons move in the same direction in a con...

    Text Solution

    |

  19. FORCE ON CURRENT CARRYING CONDUCTOR IN MAGNETIC FIELD

    Text Solution

    |

  20. Electric field inside a conductor is always zero. Is this statement tr...

    Text Solution

    |