1. An electromagnetic wave with a peak electric field component of 120 N/C has what associated peak magnetic field value?

ans: 4.0 x10^-7 T; use E/B = c.

2. What is the wavelength of 100 MHz television EM-waves?

ans: 3 m; use c = w*f.

3. What is the maximum value of the electric field E at 1 meter from a 100-watt lightbulb radiating in all directions? (m_o = 4p x10^-7 T*m/A)

ans: 77 V/m; use power/area = E²/2(mu)*c, where power=100W and area=4pi*d².