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Two moving coil meters, M(1) and M(2) ha...

Two moving coil meters, `M_(1) and M_(2)` have the following particulars :
`R_(1)=10 Omega, n_(1)=30`,
`A_(1)=3.6xx10^(-3)m^(2), B_(1)=0.25 T`
`R_(2)=14 Omega, n_(2)=42`
`A_(2)=1.8xx10^(-3)m^(2), B_(2)=0.50 T`
(The spring constants are identical for the two meters). Determine the ratio of (a) current sensitivity and (b) voltage sensitivity of `M_(2) and M_(1)`.

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