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Two moving coil meters M1 and M2 have th...

Two moving coil meters `M_1` and `M_2` have the following particulars :
`R_1 = 10 Omega , N_1 = 30`
`A_1 = 3.6 xx 10^(-3) m^2 , B_1 = 0.25 T`
`R_2 = 14Omega , N_2 = 42`
`A_2 = 1.8 xx 10^(-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` .

Text Solution

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(a) 1.4, (b) 1
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