Home
Class 12
PHYSICS
The cell in the circuit shows in Fig is ...

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)`

A

`(4)/(3) J`

B

`(8)/(9) xx 10^(3) J`

C

`(8)/(9) xx 10^(3) J`

D

`2 xx 10^(3) J`

Text Solution

Verified by Experts

The correct Answer is:
B
Use `I = (E)/(R ) [1 - e^(-t//tau)]` and `U = (1)/(2) Li^(2)`
Promotional Banner

Topper's Solved these Questions

  • INDUCTANCE

    CENGAGE PHYSICS ENGLISH|Exercise Exercises (multiple Correct )|7 Videos

  • INDUCTANCE

    CENGAGE PHYSICS ENGLISH|Exercise Exercises (assertion-reasoning)|2 Videos

  • INDUCTANCE

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

In the given at t = 0 , switch S is closed. The energy stored in the inductor at any instant t (0 lt t oo) will be

Switch is closed at t = 0 then the current in the circuit at t = L/2R is

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 in figure, the capacitor is charged with a cell of 5V .If the switch is closed at t=0 , then at t=12s , charge on the capacitor is

A circuit contains an ideal cell and an inductor with a switch. Initially, the switch is open. It is closed at t = 0 . Find the current as a function of time.

A circuit contains an ideal cell and an inductor with a switch. Initially, the switch is open. It is closed at t = 0 . Find the current as a function of time.

In the given at t = 0 , switch S is closed. The energy stored in the capacitor and inductor, respectively, at t rarr oo will be

Figure shows a circuit consisting of an ideal cell, an inductor L , and a resistor R , connected in series. Let switch S be closed at t = 0 . Suppose at t = 0 , the current in the inductor is i_(o) , then find out the equation of current as a function of time.

Figure shows a circuit consisting of an ideal cell, an inductor L , and a resistor R , connected in series. Let switch S be closed at t = 0 . Suppose at t = 0 , the current in the inductor is i_(o) , then find out the equation of current as a function of time.

CENGAGE PHYSICS ENGLISH-INDUCTANCE-Exercises (single Correct )
  1. In Fig. key K is closed at t = 0. After a long time, the potential dif...

    Text Solution

    |

  2. A solenoid of inductance L with resistance r is connected in parallel ...

    Text Solution

    |

  3. The cell in the circuit shows in Fig is ideal. The coil has an inducta...

    Text Solution

    |

  4. Switch S shown in Fig. is closed for t lt 0 and is opened at t = 0. Wh...

    Text Solution

    |

  5. In Fig, the mutual inductance of a coil and a very long straight wire ...

    Text Solution

    |

  6. In the circuit shows in Fig switch S is shifed to position 2 from posi...

    Text Solution

    |

  7. The capacitance in an oscilatory LC circuit is increased by 1%. The ch...

    Text Solution

    |

  8. In the circuit of Fig. (1) and (2) are ammeters. Just after circuit K ...

    Text Solution

    |

  9. A wire of fixed length is wound on a solenoid of length 'l' and radius...

    Text Solution

    |

  10. The frequency of oscillation of current in the circuit is

    Text Solution

    |

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

    Text Solution

    |

  12. A closed circuit of a resistor R, inductor of inductance L and a sourc...

    Text Solution

    |

  13. Given L(1) = 1 mH, R(1) = 1 Omega, L(2) = 2 mH, R(2) = 2 Omega ...

    Text Solution

    |

  14. A horizontal ring of radius r = (1)/(2) m is kept in a vertical consta...

    Text Solution

    |

  15. In the circuit shown the key (K) is closed at t=0, the current through...

    Text Solution

    |

  16. In the circuit shows in Fig. switch k(2) is open and switch k(1) is cl...

    Text Solution

    |

  17. In an L-C circuit shown in figure C=1F, L=4H At time t=0, charge i...

    Text Solution

    |

  18. An aluminium ring hangs vertically from a thread with its axis pointin...

    Text Solution

    |

  19. A coil carrying a steady current is short-circuited. The current in it...

    Text Solution

    |

  20. A solenoid has 2000 turns would over a length of 0.30 m. The area of i...

    Text Solution

    |