Home
Class 12
PHYSICS
A coil of inductance 300mh and resistanc...

A coil of inductance `300mh` and resistance `2Omega` is connected to a source of voltage `2V`. The current reaches half of its steady state value in

A

0.05s

B

0.1s

C

0.15s

D

0.3s

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Topper's Solved these Questions

  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-4| Section A (Prevous Years Problems )|28 Videos
  • Electrical Instrument

    MOTION|Exercise EXERCISE -3|16 Videos
  • ELECTRO MAGNETIC WAVES

    MOTION|Exercise EXERCISE - 3 (SECTION - B)|8 Videos

Similar Questions

Explore conceptually related problems

A coil of inductance 300mH and resistance 2 Omega. The current reaches half of its steady state value in

A solenoid of inductance 50 mH and resistance 10 Omega is connected to a battery of 6V. Find the time elapsed before the current acquires half of its steady - stae value.

A coil of inductance 8.4 mH and resistance 6 Omega is connected to a 12 V battery. The current in the coil is 1.0 A at approximately the time.

A coil of inductance 0.2 H and 1.0 W resistance is connected to a 90 V source. At what rate will the current in the coil grow at the instant the coil is connected to the source?

A coil o finductanc e 8.4mH and resistance 6Omega is connected to a 12V battery. The current in the coil is 1.0A in the time (approx .)

A coil of inductance L = 300 mH and resitance R = 140 m Omega is connected to a constant voltage source. How soon will the coil current reach eta = 50 % of the steady-state value ?

MOTION-ELECTRO MAGNETIC INDUCTION-EXERCISE-4| Section B (Prevous Years Problems )
  1. In a uniform magneitc field of induced B a wire in the form of a semic...

    Text Solution

    |

  2. A metal conductor of length 1m rotates vertically about one of its end...

    Text Solution

    |

  3. A coil of inductance 300mh and resistance 2Omega is connected to a sou...

    Text Solution

    |

  4. One conducting U tube can slide inside another as shown in figure, mai...

    Text Solution

    |

  5. The flux linked with a coil at any instant 't' is given by phi = 10t^(...

    Text Solution

    |

  6. In an AC generator, a coil with N turns, all of the same area A and to...

    Text Solution

    |

  7. An inductor (L = 100 mH), a resistor (R = 100Omega) and a battery (E =...

    Text Solution

    |

  8. An ideal coil of 10H is connected in series with a resistance of 5(Ome...

    Text Solution

    |

  9. Two coaxial solenoids are made by winding thin insulated wire over a p...

    Text Solution

    |

  10. An inductor of inductance L=400mH and resistors of resistances R(1)=2 ...

    Text Solution

    |

  11. In the circuit shown below, the key K is closed at t =0. The current t...

    Text Solution

    |

  12. A rectangular loop has a sliding connector PQ of length l and resistan...

    Text Solution

    |

  13. A fully charged capacitor C with initial charge q(0) is connected to a...

    Text Solution

    |

  14. A horizontal straight wire 20 m long extending from east to west falli...

    Text Solution

    |

  15. A boat is moving due east in a region where the earth's magnetic field...

    Text Solution

    |

  16. A coil is suspended in a uniform magnetic field, with the plane of the...

    Text Solution

    |

  17. A metallic rod of length 'l' is tied to a string of length 2l and made...

    Text Solution

    |

  18. In the circuit shown here, the point C is kept connected to the point ...

    Text Solution

    |

  19. An inductor (L =0.03 H) and a resistor (R = 0.15k(Omega)) are connecte...

    Text Solution

    |

  20. An LCR circuit is equivalent to a damped pendulum In an LCR circuit th...

    Text Solution

    |