Home
Class 12
PHYSICS
A coil of radius pi meters, 100 turns ca...

A coil of radius `pi` meters, 100 turns carries a current of `3A`. The magnetic induction at a point on its axis at a distance equal to `sqrt(3)` times its radius from its centre is

A

`7.2 xx 10^(-8) wbm^(-2)`

B

`7.2 xx 10^(-6) wbm^(-2)`

C

`7.5 xx 10^(-8) wbm^(-2)`

D

`7.83 xx 10^(-8) wbm^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`B = (mu_0"nir"^2)/(2(r^2 +x^2)^(3//2) ) `
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise EXERCISE - 1(H.W) (SOLENOID AND TOROID)|1 Videos

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise EXERCISE - 1(H.W) (FORCE ACTING ON A MOVING CHARGE IN MAGNETIC FIELD)|6 Videos

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise EXERCISE - 1(C.W) (CONVERSION OF MCG INTO AMMETER AND VOLTMETER)|12 Videos

  • MAGNETISM AND MATTER

    NARAYNA|Exercise EXERCISE - 4 (SINGLE ANSWER TYPE QUESTION)|17 Videos

  • NUCLEAR PHYSICS

    NARAYNA|Exercise LEVEL-II-(H.W)|9 Videos

Similar Questions

Explore conceptually related problems

A circular coil of radius 5 cm has 169 turns carries a current of 2.6 A . The magnetic induction at a point on the axis at a distance of 12 cm from the centre of the coil is

A circular coil of radius 10 cm having 100 turns carries a current of 3.2 A. The magnetic field at the center of the coil is

A circular coil of radius 10 cm "and" 100 turns carries a current 1A. What is the magnetic moment of the coil?

The ratio of magnetic inductions at the centre of a circular coil of radius a and on its axis at a distance equal to its radius, will be-

The intensity of magnetic induction at the centre of a current - carrying circular coil is B_(1) and at a point on its axis at a distance equal to its radius from the centre is B_(2) , then B_(1)//B_(2) is

A circular coil having 50 turns each of radius 0.05 m carries a current of 1 A. The magnitude of magnetic induction at a point 0.2 m from its centre on its axis is

A circular coil of 100 turns has a radius of 10 cm and carries a current of 5A. Calculate the magnetic field (a) at the centre of the coil (b) at a point on the axis of the coil at a distanceof 5cm from the centre of the coil.