Home
Class 12
PHYSICS
For c = 2 a and a lt b lt c , the magne...

For c = 2 a and `a lt b lt c` , the magnetic field at the point P will be zero when

A

`a=b`

B

`a=3/5b`

C

`a=5/3b`

D

`a=1/3b`

Text Solution

Verified by Experts

Magnetic field at the centre
`b=(mu_(0)I)/(2c)ox+(m_(0)I)/(2b)(3/4)o.+(mu_(0)I)/(2a)(3/4)ox`
As per problem
`0=(mu_(0)I)/2[1/c-3/(4b)+3/(4a)]implies3/4[1/b=1/a]`
`=1/c`
If `c=2a`
`3/4[1/b-1/a]=1/(2a)impliesa=5/3b`
Promotional Banner

Topper's Solved these Questions

  • NTA TPC JEE MAIN TEST 112

    NTA MOCK TESTS|Exercise PHYSICS|30 Videos

  • NTA TPC JEE MAIN TEST 120

    NTA MOCK TESTS|Exercise PHYSICS|30 Videos

Similar Questions

Explore conceptually related problems

For c=2a and c lt b lt c , the magnetic field at the point P will be zero when-

For c=2a if, the magnetic field at point P will be zero when

If a , b, c, d are non-zero integers such that a lt b lt c lt d and median of a, b, c are both equal to zero, then which one of the following is correct?

If ax^(2) + bx + c = 0 , a , b, c in R has no real roots, and if c lt 0, the which of the following is ture ? (a) a lt 0 (b) a + b + c gt 0 (c) a +b +c lt 0

If a lt 0, b gt 0 and c lt 0 , then the point P(a, b, -c) lies in the octant

NTA MOCK TESTS-NTA TPC JEE MAIN TEST 113-PHYSICS
  1. One litre of oxygen at a pressure of 1 atm and two litres of nitrogen ...

    Text Solution

    |

  2. Two magnets of magnetic moments 4Am^(2) and 3Am^(2) are joined to form...

    Text Solution

    |

  3. For c = 2 a and a lt b lt c , the magnetic field at the point P will ...

    Text Solution

    |

  4. The ends of a stretched wire of length L are fixed at x = 0 and x = L....

    Text Solution

    |

  5. The frequencies of two sound sources are 256 Hz and 260 Hz, At t=0 the...

    Text Solution

    |

  6. Water rises up to a height h in a capillary tube of certain diameter. ...

    Text Solution

    |

  7. The velocity of kerosene oil in a horizontal pipe is 5 m//s. If g = 10...

    Text Solution

    |

  8. It is desired to make a converging achromatic combination of mean foca...

    Text Solution

    |

  9. The centre of mass of three particle of masses 1 kg , 2 kg and 3 kg is...

    Text Solution

    |

  10. Two coherent point sources S1 and S2 are separated by a small distance...

    Text Solution

    |

  11. A metal ball falls from a height of 1m on to a steel plate and jumps u...

    Text Solution

    |

  12. A metal has a work function phi(0) and its corresponding threshold wav...

    Text Solution

    |

  13. A conducing circular loop of area 2.5xx10^(-3)m^(2) and resistance 10O...

    Text Solution

    |

  14. Three particles each of mass m=1 kg, are located at the vertices of an...

    Text Solution

    |

  15. For the projectile motion, the speed of the projectile when the angle ...

    Text Solution

    |

  16. A calorimeter of negligible heat capacity contains 100 g water at 40^(...

    Text Solution

    |

  17. In the arrangement shown in the diagram, pulleys are small and springs...

    Text Solution

    |

  18. Calculate x in the equation : (velocity)^x = (pressire diff.)^(3//2)xx...

    Text Solution

    |

  19. A uniform rod of mass M(1) is hinged at its upper end as shown in the ...

    Text Solution

    |

  20. Consider three rods of length L(1), L(2) and L(3) espectively joined i...

    Text Solution

    |