Question

In the pivoted-coil (Weston) type galvanometer, the two hair springs:

Options

• provide the restoring torque and act as current leads

• act as the mirror for the lamp-and-scale arrangement

• produce air damping of the coil

• suspend the coil from the instrument frame

Answer 1

In the Weston (pivoted) type, two phosphor-bronze hair springs supply the restoring torque and simultaneously serve as the current leads into the coil.