Home
Class 12
PHYSICS
(a)A car has a fresh storage battery of ...

(a)A car has a fresh storage battery of emf `12 V` and internal resistance `5.0 xx 10^(-2) Omega`. If the starter motor draws a current of `90A`, what is the terminal voltage of the battery when the starter is on?
(b) After long use, the internal resistance of the storage battery increase to `500 Omega`. What maximum current can be drawn from the battery? Assume the emf of the battery to remain unchanged.
(c) If the discharged battery is charged by an external emf source, is the terminal voltage of the battery during charging greater or less than its emf `12 V`?

Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    SL ARORA|Exercise Problems From Competitive|18 Videos

  • CURRENT ELECTRICITY

    SL ARORA|Exercise Problems For Self|101 Videos

  • CHEMICAL EFFECT OF CURRENT

    SL ARORA|Exercise TYPE-B|5 Videos

  • ELECTRIC POTENTIAL AND ELECTRIC FLUX

    SL ARORA|Exercise Problems for self practive|61 Videos

Similar Questions

Explore conceptually related problems

A car has a fresh storage battery of emt 12 V and internal resistance 5.0 xx 10^(-2) Omega . If the starter moter the battery when the starter is on? (b) After long use, the internal resistance of the storange battery increase to 500 Omega . What maximum current can be drawn from the battery? Assume the emt of the battery to remain unchanged. (c) If the discharged battery is changed by an external emf source, is the terminal voltage of the battery during changing greater of less than is emf 12 V ?

After long use of car, as given in question 33, the internal resistance of the storage battery increases to 500 Omega . What maximum current can be drawn from the battery ? Assume the emf of the battery to remain unchanged.

The battery of a trunk has an emf of 24 V. If the internal resistance of the battery is 0.8Omega . What is the maximum current that can be drawn from the battery?

The storage battery of a car has an emf of 12 V. If the inernal resistance of the battery of 0.4 Omega , What is the maximum current that can be drawn from the battery ?

A battery of emf 10 V and internal resistance 3Omega is connected to a resistor. The current in the circuit is 0.5 A . The terminal voltage of the battery when the circuit is closed is

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

SL ARORA-CURRENT ELECTRICITY-Problems For Self
  1. (a)A car has a fresh storage battery of emf 12 V and internal resistan...

    Text Solution

    |

  2. One billion electrons pass from a point P towards another point Q in 1...

    Text Solution

    |

  3. Calculate the number of free electrons passing through the filament of...

    Text Solution

    |

  4. In the electrolysis of silver chloride, a charge of 4xx10^(5) C is flo...

    Text Solution

    |

  5. In a hydrogen atom, the electron makes about 0.6xx10^(16) revolutions ...

    Text Solution

    |

  6. An electron gun emits 2.0xx10^(16) electrons per second. What is the a...

    Text Solution

    |

  7. An electric current of 2.0 mu A exists in a discharge tube. How much c...

    Text Solution

    |

  8. An electron moves in a circular orbit of radius 10 cm with a constant ...

    Text Solution

    |

  9. The current through a wire depends on time as I=I(0)+alpha t, where I(...

    Text Solution

    |

  10. A current of 4.8 A is flowing in a copper wire of cross-sectional area...

    Text Solution

    |

  11. A voltage of 30 V is applied across a colour coded carbon resistor wit...

    Text Solution

    |

  12. The sequence of bands marked on a carbon resistor is yellow , red oran...

    Text Solution

    |

  13. The resistance of a conductivity wire of length 1.1 m and of diameter ...

    Text Solution

    |

  14. A metal wire of specific resistance 64xx10^(-6) Omega m and length 1.9...

    Text Solution

    |

  15. A negligbly small current is passed through a wire of length 15 cm and...

    Text Solution

    |

  16. Calculate the resistance of a 2 m long nichrome wire of radius 0.321 m...

    Text Solution

    |

  17. Find the resistance of a hollow cylindrical conductor of length 1.0m a...

    Text Solution

    |

  18. Calculate the electric field in a copper wire of cross-sectional area ...

    Text Solution

    |

  19. A given copper wire of resistance R is stretched to reduce its diamete...

    Text Solution

    |

  20. What will be the change in resistance of a constantan wire when its ra...

    Text Solution

    |

  21. A wire of resistance 10 Omega is drawn out so that its length is thric...

    Text Solution

    |