Data: B = 1.4 Wb/m2, m = 1.67 × 10-27 kg,
q = 1.6 × 10-19 C
T = \(\frac{2 \pi m}{q B}\)
t = \(\frac{T}{2}=\frac{\pi m}{q B}=\frac{(3.142)\left(1.67 \times 10^{-27}\right)}{\left(1.6 \times 10^{-19}\right)(1.4)}\)
= 2.342 × 10-8 s
This is the required time interval.