An electric bulb is rated as 200 W. What will be the peak magnetic field at 4 m distance produced by the radiation coming from this bulb? Consider this bulb as a point source with 3. 5% efficiency.
A) 1. 19 × 10⁻⁸T
B) 1. 71 × 10⁻⁸T
C) 0. 84 × 10⁻⁸T
D) 3. 36 × 10⁻⁸T