A moving coil galvanometer has a rectangular coil of 80 turns and dimensions 6cm × 4cm . The coil is suspended in a a radial magnetic field of 0.07 WB/m² . The torsional constant of the spring is 2.5 × 10^-9 Nm/degree . Calculate the current required to be passed through the galvanometer so as to produce a deeflection of 30°
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same as a friend
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