Home
Class 12
PHYSICS
To get the maximum current from a parall...

To get the maximum current from a parallel combination of `n` identical cells each of internal resistance `r` in an external resistance `R`, when

A

`R gt gt r`

B

`R lt lt r`

C

`R = r`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Cells are joined in parallel when internal resistance is higher then a external resistance . `(R lt lt r)`
`i= (E)/(R + (r )/(n))`
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    A2Z|Exercise R-C Circuits|17 Videos

  • CURRENT ELECTRICITY

    A2Z|Exercise Ammeter And Voltmeter|41 Videos

  • CURRENT ELECTRICITY

    A2Z|Exercise Combination And Resistivity|38 Videos

  • ATOMIC PHYSICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Under what condition will the current in a wire be the same when connected in series and in parallel on n identical cells each having internal resistance r and external resistance R?

A resistor R is conneted to a parallel combination of two identical batteries each with emf E and an internal resistance r. The potential drop across the resistance R is.

An total resistance R is connected to a cell of internal resistance r the maximum current flows in the external resistance, when

A : When two cells of equal EMF and equal internal resistances are connected is parallel with positive plate of the other than , the net EMF , of the combination will be equal to the EMF of each cell. R : Effective internal resistance of the parallel combination of two identical cells will be half of the internal resistance of each cell.

A series-parallel combination battery consists of 300 identical cells, each with an internal resistance 0.3 Omega . It is connected to the external resistance 10 Omega . Find the number of parallel goups cosisting of equal number of cells connected in series, at which the external resistance generated the higher thermal power.

If E is the emf of a cell of internal resistance r and external resistance R, then potential difference across R is given as

A2Z-CURRENT ELECTRICITY-Kircoff'S Laws And Simple Circuits
  1. The figure below shows current in a part of electric circuit. The curr...

    Text Solution

    |

  2. A storage battery is connected to a charger for changing with a voltag...

    Text Solution

    |

  3. To get the maximum current from a parallel combination of n identical ...

    Text Solution

    |

  4. Two identical calls send the same current in 2 Omega resistance, wheth...

    Text Solution

    |

  5. The n rows each containing m cells in series are joined parallel. Maxi...

    Text Solution

    |

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

    Text Solution

    |

  7. In the given circuit diagram, potential difference across 2 Omega resi...

    Text Solution

    |

  8. Eight cells marked 1 to 8, each of emf 5 V and internal resistance 0.2...

    Text Solution

    |

  9. Two sources of emf 6 V and internal resistance 3 Omega and 2 Omega are...

    Text Solution

    |

  10. The electric potential variation around a single closed loop contining...

    Text Solution

    |

  11. The two ends of a uniform conductor are joined to a cell of e.m.f. E a...

    Text Solution

    |

  12. The magnitude and direction of the current in the circuit shown will b...

    Text Solution

    |

  13. Two batteries each of E and internal resistance r are connected turn b...

    Text Solution

    |

  14. N identical cells, each emf E and internal resistance r are joined in ...

    Text Solution

    |

  15. n identical calls are joined in series with its two cells A and B in l...

    Text Solution

    |

  16. In the network shown the potential difference between A and B is (R = ...

    Text Solution

    |

  17. A battery consists of a variable number n of identical cells having in...

    Text Solution

    |

  18. In previous problem, if the cell had been connected parallel (instead ...

    Text Solution

    |

  19. Consider the circuit shown in the figure. The current I(3) is equal to

    Text Solution

    |

  20. In the circuit element given here, if the potential at point B = V(B) ...

    Text Solution

    |