Home
Class 12
PHYSICS
100 cells each of emf 5V and internal re...

100 cells each of emf 5V and internal resistance `1 Omega` are to be arranged to produce maximum current in a `25 Omega` resistance. Each row contains equal number of cells. Find the number of rows.

A

2

B

4

C

5

D

10

Text Solution

Verified by Experts

The correct Answer is:
1
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    ALLEN |Exercise EXERCISE-V B|20 Videos

  • CIRCULAR MOTION

    ALLEN |Exercise EXERCISE (J-A)|6 Videos

  • GEOMETRICAL OPTICS

    ALLEN |Exercise subjective|14 Videos

Similar Questions

Explore conceptually related problems

Three cells of emf 1.5 V and internal resislance 1 Omega are connected in parallel. This combination will have the emf ....... .

(a) Six lead-acid type of secondary cells each of emf 2.0 V and internal resistacne 0.015Omega are joined in series to provide a supply to a resistance of 8.5 Omega. What are the current drawn from the suply and its terminal voltage ? (b) A secondary cell after long use has an emf of 1.9 V and a large internal resistance of 380 Omega. What maximum current can be drawn from the cell? Could the cell drive tghe starting motor of a car ?

A battery of 20 cells (each having e.m.f. 1.8V and internal resistance 0.1Omega is charged by 220 volts and the charging current is 15A. Calculate the resistance to be put in the circuit.

A battery of 10 cells each of e.m.f. E=1.5V and internal resistance 0.5Omega has 1 cell wrongly connected. It is being charged by 220V power supply with an external resistance of 47Omega in series. The potential difference across the battery.

A battery or emf 10 V and internal resistance 3 Omega is connected to a resistot. If the current in the circuit is 0.5 A, what is the resistance of the resistor ?

A battery of six cells each of e.m.f . 2V and internal resistance 0.5Omega is being charged by D.C. mains of e.m.f. 220V by using an external resistance of 10Omega . What is the potential difference across the battery?

Two cells , each of emf E and internal resistance r , are connected in parallel across a resistor R . The power delivered to the resistor is maximum if R is equal to

Two batteries, one of emf 18V and internal resistance 2Omega and the other of emf 12 and internal resistance 1Omega , are connected as shown. The voltmeter V will record a reading of

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?

ALLEN -CURRENT ELECTRICITY-EX.II
  1. When a potential difference is applied across the ends of a linear met...

    Text Solution

    |

  2. A current of two amperes is flowing through a cell of e.m.f. 5 volts ...

    Text Solution

    |

  3. 100 cells each of emf 5V and internal resistance 1 Omega are to be arr...

    Text Solution

    |

  4. Two resistance R(1) and R(2) are made of different material. The tempe...

    Text Solution

    |

  5. In the arrangement of resistances shown below, the effective resistanc...

    Text Solution

    |

  6. A potentiometer wire of length 1000 cm has a resistance of 10 ohms. It...

    Text Solution

    |

  7. Electromotive force of a cell is basically a

    Text Solution

    |

  8. A battery of e.m.f. 10 V and internal resistance 0.5 ohm is connected ...

    Text Solution

    |

  9. A galvanometer has resistance G and Current I(g) produces full scale d...

    Text Solution

    |

  10. In a neon discharge tube 2.9 xx 10^(18) Ne^(+) ions move to the right ...

    Text Solution

    |

  11. When a resistance of 2 ohm is connected across terminals of a cell, th...

    Text Solution

    |

  12. Two nonideal batteries are connected in parallel. Consider the followi...

    Text Solution

    |

  13. The current in 8Omega resistance is (as per given circuit)

    Text Solution

    |

  14. Assertion: Electric field inside a current carrying wire is zero. Re...

    Text Solution

    |

  15. Assertion: A voltmeter must be connected in parallel in a circuit and ...

    Text Solution

    |

  16. Assertion : Electric field outside the conducting wire which carreis a...

    Text Solution

    |

  17. Assertion:- Kirchhoff's voltage law indicates that field is conservati...

    Text Solution

    |

  18. Assertion: Terminal potential difference of a cell is always less than...

    Text Solution

    |

  19. Assertion: When wheatstone bridge is balanced then current through cel...

    Text Solution

    |

  20. Assertion: Potentiometer measures correct value of emf of a cell. Re...

    Text Solution

    |