Answer:
0.212V
Explanation:
The induced emf in circular loop is [tex]\epsilon=-d\frac{\phi_B}{dt}=-NA\frac{dB}{dt}[/tex]
N = Number of loops = 15
A = Cross sectional Area = [tex]\pi[/tex][tex]0.03^{2}[/tex] = 0.0009[tex]\pi[/tex]
dB = change in magnetic Field = 0-0.5 = -0.5
dt = time taken = 0.1sec
[tex]\epsilon=-15*0.0009\pi *\frac{-0.5}{0.1}[/tex] = 0.212V
