Answer:
a)
b) Length of the wire, l = 2.01 m
Explanation:
Number of turns, N = 99
diameter of the coil, d = 2.0 mm = 0.002 m
Area of the coil:
Time interval, t = 36 ms = 0.036 s
The fly turns through an angle of 90°
Magnitude of the magnetic field, B = 0.13 mT = 0.00013 T
From Faraday's law of Electromagnetism:
2) The inductance of the inductor, L = 46.6 mH = 0.0466 H
Diameter of the copper wire, d = 3.29 * 10⁻² cm = 0.000329 m
Cross sectional radius of the tube, R = 2.53 cm = 0.0253 m
Area, A = πR² = π *0.0253² = 0.002 m²
For a closely packed layer, l = Nd
N = l/d
The inductance of the inductor can be given by the formula :
Length of the wire, l = 2.01 m