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