Question

Describe the principle, construction, theory and working of a tangent galvanometer.

Answer 1

${\huge {\underline {\mathfrak {\green {Question}}}}}$

Describe the principle, construction, theory and working of a tangent galvanometer.

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${\huge {\underline {\mathfrak {\green {Answer}}}}}$

${\boxed {\red {\sf {Tangent\: Galvanometer}}}}$

A galvanometer is an electromechanical instrument used for detecting and indicating an electric current.

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${\bigstar{\bold {\sf {\blue{Principle\: of\: tangent \: galvanometer}}}}}$

Principle of tangent galvanometer is based upon tangent law in magnetism.

${\bigstar{\bold {\sf {\blue{Construction\: of\: tangent \: galvanometer}}}}}$

It consists of a circular coil of wire wound over a non magnetic frame of brass or wood. The vertical frame is mounted on a horizontal circular turn table provided with three levelling screws. The vertical frame can be rotated about its vertical diameter.

${\bigstar{\bold {\sf {\blue{Theory\: of\: tangent \: galvanometer}}}}}$

When the plane of the coil is placed parallel to the horizontal component of Earth’s magnetic induction and a current is passed through the coil, there will be two magnetic fields acting perpendicular to each other : the magnetic induction due to the current in the coil acting normal to the plane of the coil and the horizontal component of Earth’s magnetic induction.

${\bigstar{\bold {\sf {\blue{Working\: of\: tangent \: galvanometer}}}}}$

When a magnet Is suspended under the combined action of two uniform magnetic fields of strengths F and H, acting perpendicular to each other then the magnet.

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Answer 2

Answer:

Tangent Galvanometer is a device used for measuring current it works on the principle of tangent law a magnetic needle suspended at a point where there are two crossed fields at right angles to each other will come to rest in the directions of the resultant of the two field.

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