In a moving coil galvanometer the deflection (ϕ) on the scale by a pointer attached to the spring is
Two moving coil meters, M_{1} and M_{2 }ave thhe following particulars:
R_{1} = 10 Ω, N_{1} = 30, A_{1} = 3.6 × 10^{–3} m^{2}, B_{1} = 0.25 T
R_{2} = 14 Ω, N_{2} = 42, A_{2} = 1.8 × 10^{–3} m^{2}, B_{2} = 0.50 T
The spring constants are identical for the two meters. What is the ratio of current sensitivity and voltage sensitivity of M_{2} and M_{1}.
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304 docs275 tests

304 docs275 tests
