Moving Charges And Magnetism
Given,
Magnetic field applied on segment AB and DE, B = 0.30 T
Current flowing in the wire, I = 1A
Therefore,
Force acting on the wire, F = IBl sin θ
For segment AB and DE, θ = 0
∴ force acting on these segments is zero.
Force on segment BC = IBl sin 90°
= 1 (B) 8 x 10–2
= 0.08 B tesla.
Force acting on CD segment, F = 1.B.10 x 10–2.sin 30°
= 0.05B tesla.
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Two moving coil meters, M1 and M2 have the following particulars:
R1 = 10 Ω N1 = 30,
A1 = 3.6 x 10–3 m2, B1 = 0.25 T
R2 = 14 Ω; N2 = 42,
A2 = 1.8 x 10–3 m2, B2 = 0.50 T
(The spring constants k are identical for the two meters).
Determine the ratio of (a) current sensitivity and (b) voltage sensitivity of M2 and M1.
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