Year: 2017
Topic: Electromagnetic waves
Time :
1.
In an electromagnetic wave in free space the root mean square value of the electric field is \(E_{rms}\,=\, 6V m^{−1}\).The peak value of the magnetic field is
(1). \(2.83 \times 10^{−8}\,T\)
(2). \(0.70 \times 10^{−8}\,T\)
(3). \(4.23 \times 10^{−8}\,T\)
(4). \(1.41 \times 10^{−8}\,T\)