Home
Class 12
PHYSICS
A cell of internal resistance r drivers...

A cell of internal resistance r drivers current through an external resistance R. The power delivered by the to the external resistance will be maximum when:

A

The cell supplies a power EI

B

The heat is produced in R at the rate = EI

C

The heat is produced in R at the rate = `(EI)R/(R + r)`

D

The heat is produced in cell at the rate = `(EI)r/(R + r)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 9

    AAKASH INSTITUTE ENGLISH|Exercise Example|105 Videos

  • MOCK_TEST_17

    AAKASH INSTITUTE ENGLISH|Exercise Example|15 Videos

Similar Questions

Explore conceptually related problems

A cell of e.m.f. E and internal resistance r is used to send current to an external resistance R. Write expressions for (a) the total resistance of circuit, (b) the current drawn from the cell, (c) the p.d. across the cell, and (d) voltage drop inside the cell.

A cell of emf E and internal resistance r is connected in series with an external resistance nr. Than what will be the ratio of the terminal potential difference to emf, if n=9.

A cell of e.m.f E and internal resitance r ,is connected to an external resistance R. the variation of potential difference V across the resistance R as function of R as shown in the figure, is the best represented by curve

Two cells of 1.5 V and 2 V , having internal resistances of 1Omega and 2Omega respectively, are connected in parallel so as to read the current in the same direction through an external resistance of 5 Omega . The current in the external resistance will be

A battery is of emt E and internal resistance R . The value of external resistance r so that the power across eternal resistance is maximum :

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

A cell of emf epsilon and internal resistance r is connected across a load resistance R (i) Find the maximum power delivered at the load ? .

Consider N=n_(1)n_(2) indentical cells, each of emf (epsilon) and internal resistance r. Suppose n_(1) cells are joined in series to forn a line and n_(2) such are connected in parallel. The combination drives a current in an external resistance R.(a) find the current in the external resistance, (b) Assuming that n_(1) and n_(2) can be continuously varied, find the relation between n_(1) ,n_(2) R and r for which the current in R in maximum.

A cell of e.mf. E and internal resistance r is connected in series with an external resistance nr. Then, the ratio of the terminal potential difference to E.M.F.is

In a circuit a cell with internal resistance r is connected to an external resistance R. The condition for the maximum current that drawn from the cell is

AAKASH INSTITUTE ENGLISH-Mock Test27-EXAMPLE
  1. If the power dissipated in the 27 Omega resistor in the circuit shown ...

    Text Solution

    |

  2. The resistance between the lerminal points P and Q of the given infini...

    Text Solution

    |

  3. A battery of EMF 10 V, with internal resistance 1 Omega is being charg...

    Text Solution

    |

  4. A battery of EMF E produces currents 4 A and 3 A when connected to ext...

    Text Solution

    |

  5. A 5 V battery with internal resistance 1 Omega and a 2 V battery with...

    Text Solution

    |

  6. n identical cells each of e.m.f. E and internal resistance r are conne...

    Text Solution

    |

  7. Two sources of equal emf are connected to an external resistance R. Th...

    Text Solution

    |

  8. A cell of internal resistance r drivers current through an external r...

    Text Solution

    |

  9. To get maximum current through a resistance of 2.5Omega, one can use ...

    Text Solution

    |

  10. For a cell, a graph is plotted between the potential difference V acro...

    Text Solution

    |

  11. If electric bulbs having resistances in the ratio 2 : 3 are connected ...

    Text Solution

    |

  12. Two bulbs 100 W, 250 V and 200 W, 250 V are connected in parallel acro...

    Text Solution

    |

  13. Fill in the blanks :

    Text Solution

    |

  14. The following figure shows a part of a circuit,the potential differenc...

    Text Solution

    |

  15. In the given circuit. If the potential at A is 95 V, then the potentia...

    Text Solution

    |

  16. Shown is a network of currents. The magnitude of the current is also s...

    Text Solution

    |

  17. The following figure shows a part of a circuit,the potential differenc...

    Text Solution

    |

  18. Potential different across the terminals of the battery shown in figur...

    Text Solution

    |

  19. As the switch S is closed in the circuit shown in figure, current pass...

    Text Solution

    |

  20. The following figure shows a part of a circuit,the potential differenc...

    Text Solution

    |