NCERT 4.9 - Moving Charges and Magnetism
Question: Two moving coil meters, M1 and M2 have the following particulars: M1: R=10 Ω, N=30, A=3.6×10⁻³ m², B=0.25 T. M2: R=14 Ω, N=42, A=1.8×10⁻³ m², B=0.50 T. The spring constants are equal. Determine the ratio of (a) current sensitivity (b) voltage sensitivity of M2 to M1.
Answer: (a) Ratio of current sensitivity = 1.4; (b) Ratio of voltage sensitivity = 1.0
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