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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Chapter 13 - Magnetic Effect of Current > The resistance of a galvanometer is 50 ohm and the maximum current which can be passed though it is 0.002 A. What resistance must be connected to it in order to convert it into an ammeter of range 0–0.5 A ?

The resistance of a galvanometer is 50 ohm and the maximum current which can be passed though it is 0.002 A. What resistance must be connected to it in order to convert it into an ammeter of range 0–0.5 A ?

A circular coil having N turns and radius r carries a current I. It is held in the XZ plane in a magnetic field Bi . The torque on the coil due to the magnetic field is