Home
Class 12
PHYSICS
A circuit shown in the figure has resist...

A circuit shown in the figure has resistances `20 Omega` and `30 Omega`. At what value of resistance `R_x` will the thermal power generated in it be practically independent of small variations of that resistance? The voltage between points `A` and `B` is supposed to be constant in this case.

Promotional Banner

Topper's Solved these Questions

  • CAPACITANCE

    PHYSICS GALAXY - ASHISH ARORA|Exercise UNSOLVED NUMERICAL PROBLEMS|40 Videos
  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT

    PHYSICS GALAXY - ASHISH ARORA|Exercise Advance MCQs|33 Videos

Similar Questions

Explore conceptually related problems

A circuit shown in Fig, has resistances R_(1) = 20 Omega and R_(2) = 30 Omega . At what value of the resitanace R_(x) will the thermal power generated in it practically independent of small variations of that resistance? The voltage between the points A and B is supposed to be constant in this case

In a circuit shown in figure if the internal resistance of the sources are negligible then at what value of resistance R will the thermal power generated in it be the maximum. What is its value in ohms ?

In the circuit shown in figure the total resistance between points A and B is R_0 . The value of resistance R is

In a circuit shown in figure if the internal resistances of the sources are negligible then at what value of resistance R will the thermal power generated in it will be the maximum. What is the value of maximum power?

In the circuit shown in figure, the emfs of batteries are E_1 , and E_2 which have internal resistances R_1 , and R_2 . At what value of the resistance R will the thermal power generated in it be the highest? What it is?

In the circuit shown in the figure, the current flowing in 2 Omega resistance

In the circuit shown in figure, power developed across 1 Omega, 2 Omega and 3 Omega resistance are in the ratio of

In the circuit shown in figure, each resistance is Net resistance between points A and B is

PHYSICS GALAXY - ASHISH ARORA-CURRENT ELECTRICITY-All Questions
  1. Two identical batteries each of emf E= 2volt and internal resistance r...

    Text Solution

    |

  2. How will you connect ( series and parallel ) 24 cells each of interna...

    Text Solution

    |

  3. A circuit shown in the figure has resistances 20 Omega and 30 Omega. A...

    Text Solution

    |

  4. How much has a filament diameter decreased due to evaporation if the ...

    Text Solution

    |

  5. An electric toaster uses nichrome for its heating element. When a negl...

    Text Solution

    |

  6. What amount of heat will be generated in a coil resistance R due to a ...

    Text Solution

    |

  7. A conductor has a temperature independent resistance R and a total hea...

    Text Solution

    |

  8. A fuse made of lead wire has an area of cross-section 0.2mm^(2). On sh...

    Text Solution

    |

  9. Find the steady state charge stored in the capacitor.

    Text Solution

    |

  10. In the cirucit shown in figure-3.250, find the steady state charges on...

    Text Solution

    |

  11. Determine the current through the battery in the circuit shown in figu...

    Text Solution

    |

  12. In the following R-C circuit, the capacitor is in the steady state. Th...

    Text Solution

    |

  13. To the cirucit shown in figure-3.254 a capacitor of capacitance 5muF i...

    Text Solution

    |

  14. Calculate the charge on capacitor A in the circuit shown in figure-3.2...

    Text Solution

    |

  15. In the circuit shown in figure E1, 2E2=20V, R1=R2=10kOmega and C=1muF....

    Text Solution

    |

  16. A capacitor of capacitance C(1)=0.1F is charged by a battery of EMF E(...

    Text Solution

    |

  17. An isolated parallel plate capacitor has circular plates of radius 4.0...

    Text Solution

    |

  18. A circuit consists of a source of a constant emf xi and a resistance ...

    Text Solution

    |

  19. Nine wires each of resistance are connected to make a prism as shown i...

    Text Solution

    |

  20. An infinite ladder is constructed with 1(Omega)and 2(Omega)resistor as...

    Text Solution

    |