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Two moving coil meters, M1 and M2 have the following particulars:
R1 = 10 Ω, N1 = 30, A1 = 3.6 x 10-3 m2 and B1 = 0.25 T
R2 = 14 Ω, N2 = 42, A2 = 1.8 x 10-3 m2 and B2 = 0.50 T
( The spring constants are identical for the two meters.)
The ratio of current sensitivity (M2 to M1) is:
Other Reason
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