Home
Class 12
PHYSICS
Consider the circuit shown in the figure...

Consider the circuit shown in the figure. If `E=20V` , `R_(1)=4Omega` , `R_(2)=12Omega` and `L=5H` . Find current `i` , `i_(1)` , `i_(2)` , P.d. across `R_(2)` and `L`
(a) just after closing the switch `(t=0)`
(b) after a long time `(t=oo)`

Text Solution

Verified by Experts

(a) At `t=0` , inductor offers infinite resistance
`i=i_(1)(20)/(4)=5A`
`i_(2)=0`
`V_(R_2)=0`
`V_(L)=E=20V`
(b) At `t=oo` , inductor offers zero resistance
`i_(0)=(20)/(4)=5A`
`i_(2)=(20)/(12)=(5)/(3)A`
`i=i_(1)+i_(2)=5+(5)/(3)=(20)/(3)A`
`V_(R_2)=20V` , `V_(L)=0`

Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    CP SINGH|Exercise EXERCISES|141 Videos

  • CURRENT ELECTRICITY

    CP SINGH|Exercise Exercise|137 Videos

  • ELECTROMAGNETIC WAVES

    CP SINGH|Exercise EXERCISES|21 Videos

Similar Questions

Explore conceptually related problems

In the circuit shown in adjoining fig E =10V, R_(1)=1 Omega R_(2)=2 Omega, R_(3)=3 Omega and L=2H . Calculate the value of current i_(1), i_(2) and i_(3) immidiately after key S is closed :-

In the circuit shown below E_(1) = 4.0 V, R_(1) = 2 Omega, E_(2) = 6.0 V, R_(2) = 4 Omega and R_(3) = 2 Omega . The current I_(1) is

In the circuit diagram shown in Figure E=18V , L=2H, R_(1)=3Omega , R_(2)=6Omega . Switch S is closed at t=0 Match the following:

In the circuit shown in figure E_1, 2E_2=20V, R_1=R_2=10kOmega and C=1muF . Find the current through R_1,R_2 and C when (a) S has been kept connected to A for a long time. (b) The switch is suddenly shifted to B .

For the circuit shown E=50 V R_(1)=10 Omega , R_(2)= 20 Omega, R_(3) = 30 Omega L = 2.0 mH . The current through R_(1) and R_(2) are ________ . And _______ immediate after the switch is closed.

In the circuit shows in Fig E = 15 V , R_(1) = 1Omega , R_(2) = 1 Omega , R_(3) = 2Omega , and L = 1.5 H . The currents flowing through R_(1),R_(2) ,and R_(3) are i_(1),i_(2) , and i_(3) , respectively. Immediately after tuning switch S on,

In the circuit shows in Fig E = 15 V , R_(1) = 1Omega , R_(2) = 1 Omega , R_(3) = 2Omega , and L = 1.5 H . The currents flowing through R_(1),R_(2) ,and R_(3) are i_(1),i_(2) , and i_(3) , respectively. Immediately after connecting switch S ,

In the following circuit , E_1 = 4V, R_1 = 2 Omega, E_2 = 6 V, R_2 = 2Oemga, and R_3 = 4Omega. Find the currents i_1 and i_2

In the circuit shows in Fig E = 15 V , R_(1) = 1Omega , R_(2) = 1 Omega , R_(3) = 2Omega , and L = 1.5 H . The currents flowing through R_(1),R_(2) ,and R_(3) are i_(1),i_(2) , and i_(3) , respectively. After the circuit reaches the steady state,

CP SINGH-ELECTROMAGNETIC INDUCTION-EXERCISES
  1. Consider the circuit shown in the figure. If E=20V , R(1)=4Omega , R(2...

    Text Solution

    |

  2. The direction of induced current in the loop

    Text Solution

    |

  3. A current-carrying wire is placed, below a coil in its plane, with cur...

    Text Solution

    |

  4. A wire is bent to form the double loop shown in figure. There is a uni...

    Text Solution

    |

  5. Two different wire loops are concentric and lie in the same plane. The...

    Text Solution

    |

  6. A bar magnet is moved along the axis of a copper ring placed far away ...

    Text Solution

    |

  7. Consider the situation shown in . if the switch is closed and after so...

    Text Solution

    |

  8. Solve the previous question if the closed loop is completely enclosed ...

    Text Solution

    |

  9. As shown in the figure, P and Q are two coaxial conducting loops separ...

    Text Solution

    |

  10. shows a horizontal solenoid connected to a battery and a switch. A cop...

    Text Solution

    |

  11. An aluminium ring B faces an electromagnet A. The current I through A ...

    Text Solution

    |

  12. A conduting ring R is placed on the axis of a bar magnet M . The plane...

    Text Solution

    |

  13. Two circular loops of equal radii are placed coaxially at some separat...

    Text Solution

    |

  14. Two identical coaxial circular loops carry a current i each circulatin...

    Text Solution

    |

  15. Two circular coil P and Q are arranged coaxially as shown. The sign co...

    Text Solution

    |

  16. Two circular loops P and Q are placed with their planes paraller to ea...

    Text Solution

    |

  17. A small, conducting circular loop is placed inside a long solenoid car...

    Text Solution

    |

  18. A small magnet M is allowed to fall through a fixed horizontal conduct...

    Text Solution

    |

  19. In the previous question, the directions of the current flowing in the...

    Text Solution

    |

  20. A copper ring having a cut such as not to from a complete loop is held...

    Text Solution

    |

  21. Lenz's law is consequence of the law of conservation of

    Text Solution

    |