Find the percent increase in the magnetic field when the space with a current carrying toroid is filled with aluminium the suspectibility of aluminium is `2.1xx10^(-5)`

Find the magnetic field at the centre of a square of side 'a' carrying current IA.

State Ampere's circuital law. Use this law to find the magnetic field due to a straight infinite current carrying wire. How are the magnetic fields lines different from the electrostatic field lines ?

Calculate the increase in energy (in joule) per atom of a piece of aluminium when its temperature is raised by 1^(@)C . Given 27 g of aluminium contains 6xx10^(23) atoms, and specific heat capacity of aluminium ="0.2 cal .g"^(-1).^(@)C^(-1) .

When 1 A current flows through a circular conductor, the magnetic field generated at its centrs is 10^(-7) T. For what value of the current, will the magnetic field be 10^(-6) T?

What is the magnetic field produced at a distance 1 m from a long, straight conductor carrying 1 A current?

Two parallel plates of area 100 cm^2 are given equal and opposite charges of 10^(-7)C . The space between the plates is filled with a dielectric material, and the electric field within the dielectric is 3.3xx10^5 V. m^(-1) . What is the dielectric constant of the dielectric?

Find out the expression for the magnetic field at a point on the axis of a toroid of N turns having average redius r and carrying a corrent I . Show that the magnetic field in the open space inside and outside the toroid is zero.

Diameter of a toroid is 10 cm and number of turns is 5000. find the magnetic intensity and magnetic field at any point on its axis for 2.5 A current when the relative magnetic permeability of the core is 1500.