Speed of electromagnetic wave c is given by, BrmsErms=c
Brms=cErms
=3×1086
Brms=2×10−8
Brms=2B0
B0=2×Brms
=2×2×10−8
=2.83×10−8T
NEET UG 2017 — Physics Electromagnetism
In an electromagnetic wave in free space the root mean square value of the electric field is Erms=6Vm−1. The peak value of the magnetic field is
Held on 30 Apr 2017 · Verified 9 Jul 2026.
1.41×10−8T
2.83×10−8T
0.70×10−8T
4.23×10−8T
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