Home
Class 12
PHYSICS
A wire of fixed length is wound on a sol...

A wire of fixed length is wound on a solenoid of length `l` and radius `r`. Its self-inductance is found to be `L`. Now, if the same wire is wound on a solenoid of length `l//2` and radius `r//2` then the self-inductance will be

A

2L

B

L

C

4L

D

8L

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    DC PANDEY|Exercise Level 2 Subjective|10 Videos

  • ATOMS

    DC PANDEY|Exercise MEDICAL ENTRANCES GALLERY|42 Videos

Similar Questions

Explore conceptually related problems

A wire of fixed length is wound on a solenoid of length l and redius r . Its self-inductance is found to be L . Now, if the same wire is wound on a solenoid of length l//2 and redius r//2 then the self-inductance will be

A wire of fixed length is wound on a solenoid of length l and radius r, its self inductance is found to be L. If same wire is wound on a solenoid of length l/3 and radius r/3 , then self inductance will be

A thin copper wire of length 100m is wound as a solenoid of length (l) and radius (1) its self inductance is found to be L. Now if same length of wire is would as a solenoid of length (I) of radius (). Then its self inductance will be A 4L B 2L C L DL/2

On making a coil of copper wire of length  and coil radius r, the value of self inductance is obtained as L. If the coil of same wire, but of coil radius r/2, is made, the value of self inductance will be-

A solenoid of length l metre has self-inductance L henry. If number of turns are doubled, its self-inductance

A solenoid having 500 turns and length 2 m has radius of 2 cm , the self inductance of solenoid

How much length of a very thin wire is required to obtain a solenoid of length l_(0) and inductance L

Self inductance || L-R Circuit

DC PANDEY-ALTERNATING CURRENT-JEE MAIN
  1. A constant force is being applied on a road of length 'l' kept at rest...

    Text Solution

    |

  2. Figures shows a square loop of side 1m and resistance 1Omega. The magn...

    Text Solution

    |

  3. A wire of fixed length is wound on a solenoid of length l and radius r...

    Text Solution

    |

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

    Text Solution

    |

  5. In a series L-R growth circuit, if maximum current and maximum voltage...

    Text Solution

    |

  6. A resistance is connected to a capacitor in AC are the phase differece...

    Text Solution

    |

  7. A reacangular loop if size (2m xx 1m) is placed in x-y plane. A unifor...

    Text Solution

    |

  8. State wheather the following two statement are true or false

    Text Solution

    |

  9. Radius of a circular ring is changing with time and the coil is placed...

    Text Solution

    |

  10. r.m.s. value of current i=3+4sin (omegat+pi//3) is

    Text Solution

    |

  11. An AC voltage of V=220sqrt2 sin (100pit+(pi)/(2))V is applied across a...

    Text Solution

    |

  12. A direct current of 2 A and an alternating current having a maximum va...

    Text Solution

    |

  13. By what percentage the impedance in an AC series circuit should be inc...

    Text Solution

    |

  14. A power transformer (step up) with an 1:8 turns ratio has 60 Hz,120 V ...

    Text Solution

    |

  15. A choke coil has.

    Text Solution

    |

  16. Comparing the L-C oscillations with the oscillations of a spring-block...

    Text Solution

    |

  17. A capacitor of capacity 2muF is changed to a potential different of 12...

    Text Solution

    |

  18. The power factor of the circuit in fig. is 1//sqrt(2). The capacitance...

    Text Solution

    |

  19. An ac-circuit having supply voltage E consists of a resistor of resis...

    Text Solution

    |

  20. In series LR circuit, X(L) = 3 R. Now a capacitor with X(C ) = R is ad...

    Text Solution

    |