What is the deflection magnetometer?

Deflection magnetometer is an instrument used to measure the magnetic moment and polar strength of a bar magnet. In tan-B position, the bar magnet is placed on one of its arms perpendicular to it pointing the north pole towards the east or west direction.

How can we get the deflection in the magnetometer?

The deflection magnetometer consists of a large compass box with a small magnetic needle pivoted at the center of a circular scale so that the needle is free to rotate in a horizontal plane . A large aluminium pointer is rigidly fixed perpendicular to the magnetic needle. The circular scale is graduated in degrees.

How does a deflection magnetometer work?

Deflection Magnetometer works on the principle of tangent Law. According to tangent law when two uniform magnetic field act at right angles to each other on a magnetic needle, it comes to rest in the direction of the resultant field. The unit of magnetic dipole moment is ampere-square metersAm2.

What is tan A and tan B position of deflection magnetometer?

If the magnetometer and a bar magnet are placed in such way that this condition is satisfied, then this arrangement is called Tan B position. Deflection magnetometer consists of a small magnetic needle pivoted on a sharp support such that it is free to rotate in a horizontal plane.

How do you calculate M BH?

Multiply the amount of horsepower by 2.544 to calculate the amount of MBH. For example, if the amount of horsepower is 10,000, then multiplying it by 2.544 will result in 25,440 MBH.

What is the purpose of aluminium pointer in the deflection magnetometer?

Two light aluminum pointers are attached perpendicularly to its two sides to note its deflection. In magnetometer, the pointer is made of a paramagnetic substance, because paramagnetic substances develop feeble magnetisation in the direction of magnetising field. Thats why we use,aluminium to make magnetometer pointer.

What is called hysteresis?

Hysteresis is the dependence of the state of a system on its history. For example, a magnet may have more than one possible magnetic moment in a given magnetic field, depending on how the field changed in the past. Hysteresis can be found in physics, chemistry, engineering, biology, and economics.

What is tan a position of deflection magnetometer?

Tan A position. The bar magnet is placed horizontally, parallel to the arm of the deflection magnetometer, at a distance d from the center of the compass needle, chosen so that the deflection lies between 30° and 60°. The reading of the ends of the pointer are noted.

Is a magnetometer a vibration?

It is an instrument used to compare magnetic moments of two bar magnets, comparison of horizontal components of earth’s magnetic field at two places and for measuring the horizontal component of earth’s magnet field.

What do you mean by hysteresis loop?

: a cycle of alternating changes involving elastic, magnetic, or dielectric hysteresis also : the loop-shaped graph representing such a cycle.

What do you need to know about a deflection magnetometer?

Deflection magnetometer, box-type vibration magnetometer, timer, bar magnet.The deflection magnetometer consists of a large compass box with a small magnetic needle pivoted at the center of a circular scale so that the needle is free to rotate in a horizontal plane. A large aluminium pointer is rigidly fixed perpendicular to the magnetic needle.

How is the deflection of an aluminum pointer determined?

The bottom end of the bar magnet is placed a distance d from the center of the compass box, chosen so that the deflection of the aluminum pointer is between 30° and 60°. From Fig. 7, the horizontal component of the field from the bar magnet at the center of the compass is

How is the needle in a magnetometer rotated?

The magnetic needle slowly orients itself along the magnetic meridian. b) The magnetometer box is rotated slowly in its plane such that the pointer, attached perpendicular to the needle, coincides with the 0- 0 marking on the circular scale of the magnetometer.

How are the arms of a magnetometer placed?

In this position, the magnetometer arms are placed along north-south direction. The bar magnet is placed on one of its arms perpendicular to it pointing the north pole towards the east or west direction. The magnetic needle is under the action of two perpendicular fields and it will be deflected through an angleq. From tangent law,

What is the deflection magnetometer? Deflection magnetometer is an instrument used to measure the magnetic moment and polar strength of a bar magnet. In tan-B position, the bar magnet is placed on one of its arms perpendicular to it pointing the north pole towards the east or west direction. How can we get the deflection…