What is the magnetic field of a current element?

Biot Savart law states that the magnetic field due to a tiny current element at any point is proportional to the length of the current element, the current, the sine of the angle between the current direction and the line joining the current element and the point, and inversely proportional to the square of the …

What is the direction of magnetic field due to a current element?

The magnitude of the magnetic field dB at a distance r from a current carrying element dl is found to be proportional to I and to the length dl. And is inversely proportional to the square of the distance |r|. The direction of the Magnetic Field is perpendicular to the line element dl as well as radius r.

Where is the magnetic field of a current element minimum?

axis
(i) The magnetic field of a current element is minimum (which is zero) along the axis of a current element.

What is a magnetic field produced by a current like?

Each segment of current produces a magnetic field like that of a long straight wire, and the total field of any shape current is the vector sum of the fields due to each segment. The formal statement of the direction and magnitude of the field due to each segment is called the Biot-Savart law.

At what point is the magnetic field of current element zero?

(A) : When the observation point lies along the length of the current element, magnetic field is zero. (R) : According to Biot-Savart’s law field is defined only when position vector of a point relative to current element is non zero. Both ‘A’ and ‘R’ are true and ‘R’ is the correct explanation of ‘A’.

Where is the magnetism maximum and minimum?

Magnetism is strongest at north and south poles of the magnet and weakest at the “centre of a bar magnet”.

Why is magnetic field perpendicular to current?

Currents are defined by the motion of positive charges, so electrons move in the opposite direction.

Is magnetic field directly proportional to square of current?

The magnetic field around a current carrying conductor is inversely proportional to the square of ‘r’.

What is the dependence of magnetic field DB on current?

The dependence of magnetic field dB on the current I, on size and orientation of the length element dl and on distance r was first guessed by Biot and Savart. The Biot-Savart’s law gives the magnetic field produced due to a current carrying segment. This segment is taken as a vector quantity known as the current element.

What is the relation between current and magnetic field?

Biot-Savart law gives this relation between current and magnetic field. It relates the magnetic field to the magnitude, direction, length, and proximity of the electric current. A small current carrying conductor of length dl, carrying a current I is an elementary source of magnetic field.

What is the magnitude of the magnetic field DB?

The magnitude of the magnetic field dB at a distance r from a current carrying element dl is found to be proportional to I and to the length dl. And is inversely proportional to the square of the distance |r|. The direction of the Magnetic Field is perpendicular to the line element dl as well as radius r.

How do you find the magnetic field produced at a point?

Take a small element of the wire of length dl. The direction of this element is along that of the current so that it forms a vector Idl. If we want to know the magnetic field produced at a point due to this small element, then we can use the Biot-Savart’s Law.