What is Tangent Galvanometer? - QS Study
QS Study

The 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 direction of the resultant of the two fields.

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The tangent galvanometer is a type of galvanometer having a vertical coil of wire with a horizontal magnetic needle at its centre. The current to be measured is passed through the coil and produces a proportional magnetic field which deflects the needle.