Home
Class 12
PHYSICS
A length L of wire carrying current I is...

A length L of wire carrying current I is to be bent into circle or a square, each of one turn. The ratio of `B_(g)` (greater) to `B_(s)` (smaller) is nearly

A

1

B

1.15

C

`(4)/(pi)`

D

2

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise EVALUATION TEST|19 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise CRITICAL THINKING|68 Videos

  • KINETIC THEORY OF GASES AND RADIATION

    TARGET PUBLICATION|Exercise Evaluation test|18 Videos

  • MAGNETISM

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

Similar Questions

Explore conceptually related problems

A wire of length l, carrying current i, is bent in circle of radius r, then magnetic momennt at centre of loop is

A length of wire carries a steady current. It is first bent to form a circular coil of one turn. The same length is now bent more sharply to give a loop of two turns of smaller radius. The magentic field at the centre caused by the same current now will be

A wire of length L carrying current I is bent into a circle of one turn. The field at the center of the coil is B1. A similar wire of length L carrying current I is bent into a square of one turn. The field at its center is B2. Then (1) B_(1) gt B_(2) (2) B_(1) = B_(2) (3) (B_(1))/(B_(2))=2 (4) B_(1) lt B_(2)

A wire of length L carrying a current I is bent into a circle. The magnitude of the magnetic field at the centre of the circle is

A wire of length L carrying a current I is bent into a circle. The magnitude of the magneitc field at the centre of the circle is

A wire of length l meter carrying current i ampere is bent in form of circle. Magnetic moment is

A length of wire carries a steady current I. It is bent first to form a circular plane coil of one turn. The same length is now bent more sharply to give double loop of smaller radius. If the same current I is passed, the ratio of the magnitude of magnetic field at the centre with its first value is:

A length lof wire carries a steady current i. It is bent first to form a circular plane coil of one turn . The same length is now bent more sharply to give three loops of smaller radius . The magnetic field at the centre caused by the same current is

TARGET PUBLICATION-MAGNETIC EFFECT OF ELECTRIC CURRENT-COMPETITIVE THINKING
  1. Magnetic field at the centre of coil of n turns, bent in the form of a...

    Text Solution

    |

  2. Two identical wires A and B , each of length 'l', carry the same curre...

    Text Solution

    |

  3. A length L of wire carrying current I is to be bent into circle or a s...

    Text Solution

    |

  4. A current carrying thin uniform wire of length '4l' is bent like a squ...

    Text Solution

    |

  5. A sqaure loop ABCD, carrying a current I(2) is placed near and coplan...

    Text Solution

    |

  6. A long conducting wire carrying a current I is bent at 120^(@) ( see ...

    Text Solution

    |

  7. A current I is flowing in a conductor shaped as shown in figure. The r...

    Text Solution

    |

  8. The magnetic inductionn at the centre O in the figure shown is

    Text Solution

    |

  9. Two long parallel wires P and Q are both perpendicular to the plane of...

    Text Solution

    |

  10. A loop carrying current I lies in the x-y plane as shown in the figu...

    Text Solution

    |

  11. The magnetic induction at any point due to a long straight wire carryi...

    Text Solution

    |

  12. The magnetic field due to a conductor fo unifrom cross section of radi...

    Text Solution

    |

  13. A long thin hollow metallic cylinder of radius 'R' has a current i amp...

    Text Solution

    |

  14. A galvanometer of resistance G is shunted by a resistance S ohm. To...

    Text Solution

    |

  15. A galvanometer of resistance 50 Omega is connected to a battery of 8 V...

    Text Solution

    |

  16. A galvanometer of resistance 30Omega is connected to a battery of emf ...

    Text Solution

    |

  17. A galvanometer of resistance 50 Omega is connected to a battery of 3 ...

    Text Solution

    |

  18. A circuit contains an ammeter, a battery of 30 V and a resistance 40.8...

    Text Solution

    |

  19. In the circuit shown below, the ammeter and the voltmeter readings are...

    Text Solution

    |

  20. The deflection in galvanometer falls to ((1)/(4))^(th) when it is shun...

    Text Solution

    |