Home
Class 12
PHYSICS
In the circuit shown, the cell is deal. ...

In the circuit shown, the cell is deal. The coil has an inductance of `4H` and zero resistance. `F` is a fuse of zero resistance and will blow when the current through it reaches `5 A`. The switch is closed at `t=0`. The fuse will blow:

A

almost at once

B

after `2` sec

C

after `5` sec

D

after `10` sec

Text Solution

Verified by Experts

The correct Answer is:
D
`E=L(dI)/(dt)`
or `dI=(E)/(L)dt`
or `I=(2)/(4)t=0.5t`
for `I=5A,t=10` sec
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Applications Of Emi|58 Videos

  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Problems On Mixed Concepts|37 Videos

  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Motional And Rotational Emf|95 Videos

  • ELECTRIC POTENTIAL & CAPACITANCE

    A2Z|Exercise Section D - Chapter End Test|29 Videos

  • ELECTROMAGNETIC WAVES AND COMMUNICATION SYSTEM

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

In the circuit shows Fig the cell is ideal. The coil has an inductance of 4 H and zero resistance. F is a fuse of zero resistance and will blow when the current through it reaches 5 H . The switch is closed at t= 0 . The fuse will blow

In the circuit shown the cell is ideal. The codil has an inductance of 2H and will blow when the current through it reaches 5a. The switch is closed at t=0. Find the time (in second)n when fuse will blow.

The cell in the circuit shows in Fig is ideal. The coil has an inductance of 4 mH and a resistance of 2 mOmega . The switch is closed at t = 0 . The amount of energy stored in the inductor at t = 2 s is (take e = 3)

In the circuit shown, find the value of resistance R in terms of inductance L and capacitance C such that the current through the cell remains constant forever after the switch is closed.

The switch S of the circuit is closed at t = 0. Find the current (in Amp.) through the capacitor when the switch S is closed at t = 0

The ring has zero resistance.The cells are 5V 2 Omega each R is 4 Omega .Find current through R .

In a circuit containing an inductance of zero resistances, the e.m.f of the applied AC voltage leads the current by

A cell of e.m.f. 2 V and internal resistance 2Omega and an external resistance 18Omega forms closed circuit. The current through the circuit is

At t=0 , an inductor of zero resistance is joined to a cell of emf varepsilon through a resistance. The current increases with a time constant tau . The emf across the coil after time t is

In Fig. 30-58, R = 15 Omega , L = 15 H , the ideal ba ttery has E = 10 V, and the fuse in the upper branch is an ideal 3.0 A fuse. It has zero resistance as long as the current through it remains less than 3.0 A. lf the current reaches 3.0 A, the fuse "blows" and thereafter has infinite resistance. Switch S is closed at time t = 0. (a) When does the fuse blow? (b) Sketch a graph of the current i through the inductor as a function of time. Mark the time at which the fuse blows.

A2Z-ELECTROMAGNETIC INDUCTION-Inductor Circuits
  1. In the figure magnetic energy stored in the coil is

    Text Solution

    |

  2. A LC circuit is in the state of resonance. If C=0.1muF and L=0.25 henr...

    Text Solution

    |

  3. An oscillator circuit consists of an inductance of 0.5mH and a capacit...

    Text Solution

    |

  4. A coil of inductance 300mH and resistance 2 Omega. The current reaches...

    Text Solution

    |

  5. In series with 20 ohm resitor a 5 henry inductor is placed. To the com...

    Text Solution

    |

  6. A50 volt potential difference is suddenly applied to a coil with L=5xx...

    Text Solution

    |

  7. The current in a LR circuit builds up to (3)/(4th) of its steady state...

    Text Solution

    |

  8. In the circuit shown in figure switch S is closed at time t=0. The cha...

    Text Solution

    |

  9. The resistance in the following circuit is increase at a particle inst...

    Text Solution

    |

  10. In the current shown Fig., X is joined to Y for a long time and then X...

    Text Solution

    |

  11. In the circuit shown, the cell is deal. The coil has an inductance of ...

    Text Solution

    |

  12. The figure shows three circuit with identical batteries, inductors, an...

    Text Solution

    |

  13. In which of the following circuits is the current maximum just after t...

    Text Solution

    |

  14. An e.m.f. of 15 volt is applied in a circuit containing 5 henry induct...

    Text Solution

    |

  15. Switch S of the circuit shows in Fig. is closed at t = 0. If e denotes...

    Text Solution

    |

  16. In the given circuit, let i(1) be the current drawn battery at time t=...

    Text Solution

    |

  17. In the circuit shown in Fig. Sliding contact is moving with uniform ve...

    Text Solution

    |

  18. Consider the circuit shown in figure. The current through the battery ...

    Text Solution

    |

  19. in the previous question, suppose the switch is again opened at t=0, t...

    Text Solution

    |

  20. In the circuit shown in figure switch S is closed at time t=0. The cha...

    Text Solution

    |