Home
Class 12
PHYSICS
The potential difference across te termi...

The potential difference across te terminals of a battery is 10 V when there is a current of 3 A in the battery from the negative to the positive terminal. When the current is 2A in the reverse direction, the potential difference becomes 15 V. The internal resistance of the battery is

A

`1Omega`

B

`0.4Omega`

C

`0.6Omega`

D

`0.8Omega`

Text Solution

Verified by Experts

The correct Answer is:
A
`E-3r=10` …(i)
`E+2r=15` ..(ii)
solving (i) & (ii) `r=1`
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 3|46 Videos

  • CURRENT ELECTRICITY

    NARAYNA|Exercise NCERT Based Questions|13 Videos

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 2 C.W|59 Videos

  • COMMUNICATION SYSTEM

    NARAYNA|Exercise Level-II(H.W)|25 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise ASSERTION AND REASON|15 Videos

Similar Questions

Explore conceptually related problems

The potential difference across the terminals of a battery is 8.4 V when there is a current of 1.50 A in the battery from the negative to the positive terminal. When the current is 3.50 Air , the reverse direction, the potential difference becomes 9.4 V . (a) What is the internal resistance of the battery? (b) What is the emf of the battery?

Potential difference across the terminal of a non ideal battery is

Potential different across the terminals of the battery shown in figure is

The potential difference across terminals of a battry is 9.0 V , when a current of 3.5A flows through it from its negative terminal to the positive terminal .When a current of 2A flows through in the opposite direction, the terminal potential difference is 12V . Find the internal resistance and emf of the battery

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

Potential difference across the terminal of alpha battery drops by 1 V when alpha current of 1 A is drawn from its positive terminal by connecting it to alpha circuit . What is the internal resistacne of the battery ?

When a current of 2 A flows in a battery from negative to positive terminal, the potential difference across it is 12 V. If a current of 3 A flowing in the opposite direction produces a potential difference of 15 V, the emf of the battery is

When a current of 2 A flows in a battery from negative to positive terminal, the potential difference across it is 20 V. If a current of 3 A flowing in the opposite direction produces a potential difference of 25 V, the emf of the battery is

NARAYNA-CURRENT ELECTRICITY-Level 2 H.W
  1. The pd across terminals of a cell is found to be 29 volt and 28 volt r...

    Text Solution

    |

  2. The current in a circuit containing a battery connected to 2Omega resi...

    Text Solution

    |

  3. The potential difference across te terminals of a battery is 10 V when...

    Text Solution

    |

  4. Two cells of emf 3V and 5V and internal resistance r(1) and r(2) respe...

    Text Solution

    |

  5. A battery when connected by resistance of 16Omega gives a terminal vo...

    Text Solution

    |

  6. When a resistor of 11 Omega is connected in series with an electric ce...

    Text Solution

    |

  7. Two cells of emf 4 V and 8 V are connected to two resistor 4Omega and ...

    Text Solution

    |

  8. If in the circuit shown below, the internal resistance of the battery ...

    Text Solution

    |

  9. Voltmeter reading in the given circuit is (voltmeter is ideal)

    Text Solution

    |

  10. For a cell the graph between the p.d. (v) across the terminals of the ...

    Text Solution

    |

  11. The minimum number of cells in mixed grouping required to produced a m...

    Text Solution

    |

  12. A battery of emf E and internal resistance r is connected to a resisto...

    Text Solution

    |

  13. The emf of a cell E is 15 V as shown in the figure with an internal re...

    Text Solution

    |

  14. The current I drawn from the 5 volt source will be

    Text Solution

    |

  15. In the given circuit which is a part of closed circuit the current i(1...

    Text Solution

    |

  16. A 5V battery with internal resistance 2Omega and a 2V battery with int...

    Text Solution

    |

  17. When a conductor is connected in the left gap and known resistance in ...

    Text Solution

    |

  18. In a meter bridge experiment when a resistance wire is connected in th...

    Text Solution

    |

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

    Text Solution

    |

  20. A potentiometer wire 10m long has a resistance of 40Omega. It is conne...

    Text Solution

    |