Essary to use (i) redial magnetic field and (ii) a cylindrical soft iron core in a galvanometer?
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Why is it necessary to use (i) a radial magnetic field and (ii) a cylindrical soft iron core in a galvanometer? ... Torque produced in the coil of galvanometer is given by , (ii) Cylindrical soft iron core, when placed inside the core makes the magnetic field stronger and radical between it and pole pieces.
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