Question

An electromagnetic wave is transporting energy in the negative y direction. At one point and one instant the magnetic field is in the positive x direction. The electric field at that point and instant is A.positive y direction Explain B.negative y direction C.positive z direction D.negative z direction E.negative x direction

Answer 1

Answer:

D.negative z direction.

Explanation:

Hello,

In this case, electromagnetic waves are waves that result when vibrations between an electric field and a magnetic field are exhibited, it means they are composed by both oscillating magnetic and electric fields. In such a way, when the electromagnetic wave is moving across the x-direction, the associated magnetic field oscillates across the xz-plane and the corresponding electric field across the xy-plane.

In this manner, the referred electromagnetic wave is transferring energy across the negative y direction, in addition, the magnetic field turns out positive across the x direction. Considering the aforesaid reasons, one concludes that the electric field at that point and instant is in the negative z direction.

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Answer 2

Answer:

D. negative z direction

Explanation:

Electromagnetic waves ( such as light) are transverse waves that are composed of mutually perpendicular (at right angle), fluctuating electric and magnetic fields. This means that when an electromagnetic wave is propagating in the x-direction, the magnetic field oscillates in the xz-plane while the electric field oscillates in the xy-plane. Thus, for the given problem:

An electromagnetic wave that is conveying energy in the negative y direction. At one point and one instant the magnetic field is in the positive x direction. Therefore, the electric field at that point and instant is in the negative z direction.