Q.3. In 1965 Penzias and Wilson discovered the cosmic microwave radiation left over from the Big Bang expansion of the universe. The energy density of this radiation is 7.27 × 10^?14 J/m3.The speed of light 2.99792 × 10^8 m/s and the permeability of free space is 4? ×10^?7 N/A2. Determine the corresponding electric field amplitude. Answer in units of V/m.