Home
Class 12
PHYSICS
At t = 0, switch S is closed (shown in F...

At `t = 0`, switch `S` is closed (shown in Fig.). After a long time, suddenly the inductance of the inductor is made `eta` times lesser `(L//eta)` than its initial value. Find out current just after the operation.

Text Solution

Verified by Experts

`i_(1) = (varepsilon)/(R ),L_(1) i_(1) = L_(2)i_(2) rArr i_(2) = (eta varepsilon)/(R )`
Promotional Banner

Topper's Solved these Questions

  • INDUCTANCE

    CENGAGE PHYSICS ENGLISH|Exercise Exercises (subjective)|7 Videos

  • INDUCTANCE

    CENGAGE PHYSICS ENGLISH|Exercise Exercises (single Correct )|65 Videos

  • INDUCTANCE

    CENGAGE PHYSICS ENGLISH|Exercise Solved Examples|3 Videos

  • HEATING EFFECT OF CURRENT

    CENGAGE PHYSICS ENGLISH|Exercise Thermal Power in Resistance Connected in Circuit|27 Videos

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS ENGLISH|Exercise Multiple Correct Answer type|2 Videos

Similar Questions

Explore conceptually related problems

In Fig. switch S is closed for a long time. At t = 0 , if it is opened, then

In Fig. switch S is closed for a long time. At t = 0 , if it is opened, then

Switch S is cloesd in the circuit at time t = 0 . Find the current through the capacitor and the inductor at any time t

In the circuit shown, switch S is closed at time t = 0 . Find the current through the inductor as a function of time t .

In the circuit shown in figure switch S is closed at time t=0 At what time current through 3Omega resistance and 1H inductor are equal?

The switch S is closed in the circuit shown at time t=0 . The current in the resistor at t=0 and t =oo are respectively .

In the circuit shown in figure the switch S is closed at t = 0. A long time after closing the switch

In a decaying L-R circuit, the time after which energy stores in the inductor reduces to one fourth of its initial values is

In the circuit diagram shown, initially there is no energy in the inductor and the capacitor, The switch is closed at t = 0 . Find the current I as a function of time if R=sqrt(L//C)

The switches in figure and are closed at =0 and reopended after al long time at t = t_0 .

CENGAGE PHYSICS ENGLISH-INDUCTANCE-Exercise 4.1
  1. Figure shows an LCR circuit. When the switch is closed, the currents t...

    Text Solution

    |

  2. It has been proposed to use large inductors as energy storage devices....

    Text Solution

    |

  3. A 1 -k Omega resistor is connected in series with a 10-mH inductor, a ...

    Text Solution

    |

  4. A capacitor with capacitance 6 xx 10^(-5) F is charged by connecting i...

    Text Solution

    |

  5. In the circuit shows in Fig. , E = 10 V, R(1) = 5 Omega, R(2) = 10 Ome...

    Text Solution

    |

  6. In Fig. the switch is closed and steady-state conditions are establish...

    Text Solution

    |

  7. The switch in figure is closed at time t = 0. Find the current in the ...

    Text Solution

    |

  8. AB is a part of circuit. Find the potential difference V(A) - V(B) if ...

    Text Solution

    |

  9. A circuit contains an ideal cell and an inductor with a switch. Initia...

    Text Solution

    |

  10. In the following circuit (Fig.) the switch is closed at t = 0. Find th...

    Text Solution

    |

  11. In a circuit S(1) remains closed for a long time and S(2) remain open....

    Text Solution

    |

  12. At t = 0, switch S is closed (shown in Fig.). After a long time, sudde...

    Text Solution

    |

  13. Which of the two curves shows has lesser time constant.

    Text Solution

    |

  14. Two insulated wires are wound on the same hollow cylinder, s as to fro...

    Text Solution

    |

  15. Find the mutual inductance of two concentric coils of radii a(1) and a...

    Text Solution

    |

  16. Solve problem 19 if the planes of the coils are perpendicular.

    Text Solution

    |

  17. Find the mutual inductance of two concentric coils of radii a(1) and a...

    Text Solution

    |

  18. Figure. shows two concentric coplanar coils with radii a and b(alt lt...

    Text Solution

    |

  19. Figure. shows two concentric coplanar coils with radii a and b(alt lt...

    Text Solution

    |

  20. If the current in the inner loop changes according to I = 2t^(2) (Fig ...

    Text Solution

    |