Home
Class 12
PHYSICS
A toroid has a core (non-ferromagnetic) ...

A toroid has a core (non-ferromagnetic) of inner radius 25 cm and outer radius 26 cm, around which 3500 turns of a wire are wound. If the current in the wire is 11 A, what is the magnetic field inside the core of the toroid.

Text Solution

Verified by Experts

We are given:
Inner radius ` r _(1), = 25 cm`
Outer radius ,` r _(2) = 26 cm`
Number of turns, `N = 35 00 , I = 1 1 A`
Average radius `r = ( r _(1) + r _(2))/(2) = ( 25 + 26)/(2) = 25.5 cm = ( 25.5)/(100) m`
Number of turns per unit length `=(N)/( 2pi r ) implies n = ( 3500)/( 2 xx 3. 14 xx 25.5 xx 10^(-2)) = 2185.6` per metre
Mangeitc field inside the core of troid `B = mu _(0) n I = 4pi xx 10 ^(-7) xx 21 85. 6 xx 11 = 3. 02 xx 10 ^(-2) T`
Promotional Banner

Similar Questions

Explore conceptually related problems

A toroid has a core (non-ferromagnetic) of inner radius 25 cm and outer radius 26 cm, around which 3500 turns of a wire are wound. If the current in the wire is 11 A, what is the magnetic field outside the toroid.

A toroid has a core (non-ferromagnetic) of inner radius 25 cm and outer radius 26 cm, around which 3500 turns of a wire are wound. If the current in the wire is 11 A, what is the magnetic field in the empty space surrounded by the toroid.

A toroid has a core of inner radius 20cm and outer radius 22cm around which 4200 turns of a wire are wound. If the current in the wire is 10A, what is the magnetic field inside the core of toroid.

A toroid has a core of inner radius 20cm and outer radius 22cm around which 4200 turns of a wire are wound. If the current in the wire is 10A, what is the magnetic field outside the toroid.

A Rowland ring of mean radius 15 cm has 3500 turns of wire wound on a ferromagnetic core of relative permeability 800. What is the magnetic field B in the core for a magnetising current of 1.2 A?

A circular coil of 50 turns and radius 0.2 cm carries a current of 12 A. Find magnetic field at the centre of the coil.

A circular coil of 20 turns and radius 10 cm is placed in a uniform magnetic field of 0.10 T normal to the plane of the coil. If the current in the coil is 5.0 A, what is the average force on each electron in the coil due to the magnetic field? (The coil is made of copper wire of cross-sectional area 10^-5 m^2 , and the free electron density in copper is given to be about 10^29 m^-3 .)