Answer:
2.93 x 10⁻⁴ Volts
Explanation:
N = number of turns in the cylindrical coil = 400
r = radius = 2 cm = 0.02 m
A = Area = πr² = (3.14) (0.02)² = 0.001256 m²
ΔB = Change in magnetic field = 0.13 - 0.06 = 0.07 T
t = time interval = 2 min = 2 x 60 s = 120 s
R = resistance of the resistor = 6 Ω
Induced emf between the ends of coil is given as
[tex]E = \frac{N\Delta BA}{t}[/tex]
[tex]E = \frac{(400)(0.07)(0.001256)}{120}[/tex]
E = 2.93 x 10⁻⁴ Volts
