Question

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

Answer 1

Explanation:

The magnitude of the magnetic field produced by the coil is B; the magnitude of the horizontal component the Earth's magnetic field is B'. ... 4 AIM OF THE PROJECT The aim of the project is to study the Earth's magnetic field and find its value (BH) using a tangent galvanometer.

Answer 2

The Galvanometer is used to detect the current in the electric circuit .

• The principle of it the current carrying loop placed in uniform magnetic field experience torque.
• The earth's magnetic field is measured by the galvanometer using the concept of the torque.
• Because at every moment the change in the position due to the circular motion and therefore the tangent will be there and resultant in making the torque.
• torque or the moment of galvanometer is written as G=Ф/I
• Or G=NBA/K