Earths magnetic field using a tangent galvanometer. Horizontal Component of Earth’s Magnetic Field Using Tangent Galvanometer 2022-12-11

Tangent Galvanometer: Concept, History, and Uses

Record the reading of the ammeter and the deflection of the compass needle in a box shown by two ends of pointer of the scale. B Loop Objectives: To verify: · the vector nature of magnetic fields; · that the field at the center of a current loop is normal to the loop and directed in accordance with right hand rule; To investigate the relationship between the magnetic field and: · the number of turns - B N ; · the value of the current - B I inside a current carrying coil. By adjusting the rheostat, bring the deflection in galvanometer around 45 degree. The direction of the magnetic field at the center of the wire loop can be determined with the help of the right-hand-rule. The horizontal component of the earth's field can now be found by measuring the field due to the coils and the direction of the net magnetic field relative to the direction of the earth's field. APPARATUS REQUIRED Tangent galvanometer TG , commutator, battery, rheostat, ammeter, key and connecting wires. The magnetic field of the earth is thought to be caused by convection currents in the outer core of the earth working in concert with the rotation of the earth.

Measuring earth's magnetic field using tangent galvanometer project

In this view the number of loops N is fixed at 4 and the current I is fixed at 3. The apparatus is viewed from two perspectives: Overhead Figure 2a , and Oblique Figure 2b. Therefore, you should find that the plots of tanθ vs. Read the both ends of the pointer. There are various uses of tangent galvanometer pertaining to electric current and magnetic field. Begin with the power turned off. Table for radius of tangent galvanometerS.

Magnetic Field for Tangent Galvanometer Calculator

The magnetic needle should swing freely in the horizontal plane. · One can easily verify the relationship between the magnetic field inside the current loop, the current itself, and the number of turns with a tangent galvanometer. This way, when there is an application of current; one can measure the angle the needle turns. View 2: Oblique The Oblique view shown in Figure 2b does not rotate. The magnetic field of the coil is parallel to the coil axis.

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Vector sum of the magnetic fields. Moreover, in such a setting, the compass is used to align the coil in a north to south manner. Final conclusion: Do your experimental findings support equation 1? Drag the end of the vector BEarth to point in the magnetic north direction as shown in Figure 3a. · The mean value θ of θ 1, θ 2, θ 3 and θ 4 is calculated and tabulated. Inner diameter d1Outer diameterd2Mean Diameter d Mean Radius 1. Here, a magnetic needle is suspended at a point where the crossing of two fields takes place at right angles to each other. The magnetic needle is then under the action of two mutually perpendicular fields.

To study the earth's magnetic field using a tangent galvanometer

It was more sensitive than the electromagnetic galvanometer. You might want to arrange the B Loop vector to point in the direction you think is correct. If the current is expressed in amperes A , and the radius in meters m , the unit of magnetic field strength is Tesla T. Drag the end of the vector BEarth to point in the magnetic north direction as shown in Figure 3a. The battery should be freshly charged. The compass at the bottom right provides a close - up of the real compass. Some additional experiments away from the theory courses are added to enhance the scope of learning beyond the subjects covered in the theory.

Horizontal Component of Earth’s Magnetic Field Using Tangent Galvanometer

However, all efforts are made to clarify any doubt by the teachers engaging these laboratory classes. Specifically, this point is where these fields shall come to a state of rest in the direction of the resultant. If the current is expressed in amperes A , and the radius in meters m , the unit of magnetic field strength is Tesla T. Is the current flowing into the screen at 180° and out at 0° or into the screen at 0° and out at 180°? Neither vector automatically points in the appropriate direction. Incidentally, the north magnetic pole of the earth does not coincide with the north geographic pole. Note that this field vector is parallel to the axis of the coil. The magnetic field of the earth is thought to be caused by convection currents in the outer core of the earth working in concert with the rotation of the earth.

(DOC) to study earth's magnetic field using a tangent galvanometer

It will involve switching the current on and off and rotating the apparatus. G the tangent galvanometer. Notice how the deflection of the compass is affected by the power switch, the voltage adjust knob, and the number of loops of wire. View 1: Overhead Figure 2b. It acts in accordance with the principle of tangent law. We expect it to be normal to the plane of the loop.

Earth's magnetic field by using tangentgalvanometer

Using a spirit level, level the base and compass needle in compass box of tangent galvanometer by adjusting the leveling screw. All the readings must be adjusted between 30o and 600. In the year 1834, J. The leveling screws at the base of TG are adjusted so that the circular turn table is horizontal and the plane of the circular coil is vertical. This magnetic field can be detected by observing the behavior of a compass needle in the presence of current carrying elements. The commutator can reverse the current through the T.

Here, we shall take a look at who invented the tangent galvanometer. · It makes possible the investigation of the vector nature of magnetic fields and it helps in understanding how they add vectorially. Enter your data in Logger Pro and plot both θ vs. Radius of Ring - Measured in Meter - Radius of Ring is a line segment extending from the center of a circle or sphere to the circumference or bounding surface. · It helps in the determination of the accurate strength of the magnetic field of the Earth. You will only work with one view while performing a given part of the lab.