An electromagnetic wave is represented by

PHYSICS · Subjective · CBSE · Physics · Waves · Waves

Problem

E(x,t)=5.0\,\text{V m}^{-1}\sin\!\left(2\pi\left(\dfrac{x}{1.0\,\text{m}}-\dfrac{t}{4.0\times10^{-9}\,\text{s}}\right)\right)

. At

t=0

, locate the two nearest positions (one on each side of

x=0

) where the electric field is zero.