Moving Charges ...

The magnetic field near a current carrying conductor is given by

A current of 10 A is passing through a long wire which has semicircular loop of the radius 20 cm as shown in the figure. Magnetic field produced at the centre of the loop is

A wire in the form of a circular loop of one turn carrying a current produces a magnetic field B at the centre. If the same wire is looped into a coil of two turns and carries the same current, the new value of magnetic induction at the centre is

A current flows in a conductor from east to west. The direction of the magnetic field at a points above the conductor is

The magnetic field due to a current carrying circular loop of radius 3 cm at a point on the axis at a distance of 4 cm from the centre is 54 μT. What will be its value at the centre of the loop

The magnetic induction at the centre of a current carrying circular of coil radius r, is

Two wires of same length are shaped into a square and a circle. If they carry same current, ratio of the magnetic moment is

The direction of magnetic lines of force produced by passing a direct current in a conductor is given by

The field due to a long straight wire carrying a current I is proportional to

Two concentric coils each of radius equal to 2π cm are placed at right angles to each other 3 ampere and 4 ampere are the currents flowing in each coil respectively. The magnetic induction in weber/m² at the centre of the coils will be (μ₀ = 4 π × 10^–7 Wb/A.m)