Home
Class 12
PHYSICS
The minimum number of cells in mixed gro...

The minimum number of cells in mixed grouping required to produced a maximum curret of 1A through external resistance of `20Omega` given the emf of each cell is 2 V and internal resistance `1Omega` is

A

25

B

20

C

16

D

30

Text Solution

Verified by Experts

The correct Answer is:
B

No. of cells `=mxxn`
`i_(max)=mR=nr`
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

Find the minimum number of k cells required to produce a current of 1.5A through a resistance of 30Omega. Given that the emf of each cell is 1.5V and the internal resistance is 1Omega

Maximum current produced by a cell of emf 10 V and internal resistance 2 Omega is

Maximum current produced by a cell of emf 10 V and internal resistance 2 Omega is

Two similar cells, whether joined in series or in parallel, have the same current through an external resistance of 2Omega . The internal resistance of each cell is :

It is required to send a current of 10 A through a resistance R = 3 Omega . (a) What is the minimum number of cells required if each cell has an emf of 10 V and internal resistance 1 Omega . (b) Find the power dissipated in R.

The internal resistance of a 2.1 V cell which gives a current 0.2 A through a resistance of 10 Omega

In a mixed grouping of identical cells, five rows are connected in parallel and each row contains 10 cells. This combination sends a current I through an external resistance of 20Omega. if the emf and internal resistance of each cell is 1.5 V and 1 Omega, respectively then find the value of I.

NARAYNA-CURRENT ELECTRICITY-Level 2 H.W
  1. Two cells of emf 3V and 5V and internal resistance r(1) and r(2) respe...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  18. the ratio of potential gradients is 1:2, the resistance of two potenti...

    Text Solution

    |

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

    Text Solution

    |

  20. 1 ohm resistance is in series with a Ammeter which is balanced by 75 c...

    Text Solution

    |