Home
Class 12
PHYSICS
Battery shown in figure has e.m.f. E and...

Battery shown in figure has e.m.f. `E` and internal resistance `r`. Current in the circuit can be varied by sliding the contact `J`. If at any instant current flowing through the circuit is `I`, potential difference between terminals of the cells is `V`, thermal power generated in the cell is equal to `eta` fraction of total electrical power generated in it, then which of the following graphs is correct ?

A

B

C

D

Both a and b are correct

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • HEATING EFFECT OF CURRENT

    CENGAGE PHYSICS|Exercise Calculating Thermal Power in Resistance|14 Videos

  • GRAVITATION

    CENGAGE PHYSICS|Exercise Question Bank|39 Videos

  • INDUCTANCE

    CENGAGE PHYSICS|Exercise Concept Based|9 Videos

Similar Questions

Explore conceptually related problems

The current flowing through the cell in the circuit shown is

If internal resistance of cell is negligible, then current flowing through the circuit is

A current of 3A flows in a circuit shown in the figure. The potential difference between A and b is

Find the current flowing through each cell in the circuit shown in figure. Also calculate the potential difference across the terminals of each cell.

In the circuit shown in figure, power generated in

The potential difference between the terminals of a cells is found to be 3 volts when it is connected to a resistance equal to its internal resistance. The e.m.f. of the cell is :–

CENGAGE PHYSICS-HEATING EFFECT OF CURRENT-Thermal Power in Resistance Connected in Circuit
  1. In the circuit shown in fig the heat produced in the 5 ohm resistor du...

    Text Solution

    |

  2. Water boils in an electric kettle in 15 minutes after switching on. If...

    Text Solution

    |

  3. In the circuit as shown in the figure, the heat produced by 6 ohm resi...

    Text Solution

    |

  4. The resistance of a heater coil is 110 ohm. A resistance R is connecte...

    Text Solution

    |

  5. Four identical electrical lamps are labelled 1.5 V 0.5 A which describ...

    Text Solution

    |

  6. If the cell of emf 5 volt shown in the figure gives a power of 10W. Q,...

    Text Solution

    |

  7. (A) Consider circuit in figure. How much energy is absorbed by electro...

    Text Solution

    |

  8. Battery shown in figure has e.m.f. E and internal resistance r. Curren...

    Text Solution

    |

  9. Two identical electric lamps marked 500 W, 220 V are connected in seri...

    Text Solution

    |

  10. Figure 7.37 shows a network of three resistances. When some potential...

    Text Solution

    |

  11. If the length of the filament of a heater is reduced by 10%, the power...

    Text Solution

    |

  12. The resistance of the filament of a lamp increases with the increase i...

    Text Solution

    |

  13. In the following circuit, 18Omega resistor develops 2J/sec due to curr...

    Text Solution

    |

  14. For ensuring dissipation of same energy in all three resistors (R(1), ...

    Text Solution

    |

  15. The resistance of the filament of an electric bulb changes with temper...

    Text Solution

    |

  16. An electric bulb rated for 500 W at 100 V is used in a circuit having ...

    Text Solution

    |

  17. The wiring of a house has resistance 6 Omega A 100 W bulb is glowing. ...

    Text Solution

    |

  18. In the following circuit, 5Omega resistor develops 45 J/s due to curre...

    Text Solution

    |

  19. Consider a resistor of uniform cross-sectional area connected to a bat...

    Text Solution

    |

  20. A variable current flows through a 1Omega resistor for 2 s. Time depe...

    Text Solution

    |