An element dl =dx, (where dx = 1 cm) is placed at the origin and carries a large current I = 10 A. What is the magnetic field on the Y-axis at a distance of 0.5 meter ?

A length L of wire carries a steady current 1 A. It is bent first to form a coil of 1 turn. The same length is now bent more sharply to give a double loop of smaller radius. The magnetic field at the center caused by the same current is

If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be

The magnetic induction at a point P which is at a distance 4 cm from a long current carrying wire is 10^–8 T. The field of induction at a distance 12 cm from the same current will be

The strength of the magnetic field at a point y near a long straight current carrying wire is B. The field at a distance y/2 will be

The magnetic field (B) at the center of a circular coil of radius a, through which a current I flows is

What is incremental field strength at P₂ due to the current element of 2πā_z μAm at P₁? The coordinates of P₁ and P₂ are (4,0,0) and (0,3,0) respectively.

What will be the ΔH₂ for the value, P₁(0, 0, 2), P₁(4, 2, 0), I₁ΔL₁ = 2πā_z μAm?

Biot Savart's law in magnetic field is analogous to which law in electric field?

Which of the following cannot be computed using the Biot Savart's law?