PhysicsNEET 2023Electromagnetic spectrum

Electromagnetic Waves

In a plane electromagnetic wave travelling in free space, the electric field component oscillates sinusoidally at a frequency of $2.0 \times 1 0^{10}$ Hz and amplitude $48 V m^{- 1}$ . Then the amplitude of the oscillating magnetic field is (speed of light in free space $= 3 \times 1 0^{8} m s^{- 1}$ ):

A. $1.6 \times 1 0^{- 9}$ T
B. $1.6 \times 1 0^{- 8}$ T
C. $1.6 \times 1 0^{- 7}$ T✓
D. $1.6 \times 1 0^{- 6}$ T

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Electromagnetic Waves

More from this chapter in past papers