Questions
The electric field of a plane electromagnetic wave propagating along the x direction in vacuum is . The magnetic field , at the moment t = 0 is
detailed solution
Correct option is A
Amplitude of magnetic field B0=E0C B0=E0μ0ε0E→×B→ is along direction of propagation∴j^×B^ must be parallel to i^ ∴B→ should be along k^ E→,B→ are in same phase∴B→=B0k^cosωt−kx B→=E0μ0ε0cosωt−kxk^ At t = 0 B→=E0μ0ε0coskx k^Talk to our academic expert!
Similar Questions
The transmitting antenna of a radio-station is mounted vertically. At a point 10 km due north of the transmitter the peak electric field is 10-3 V/m. The amplitude of the radiated magnetic field is
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