Question

An electric charge on the z axis oscillates sinusoidally about the origin. A distant observer is located at a point on the +y axis. Part A In what direction will the electric field oscillate at the observer's location? Previous Answers Correct Part B In what direction will the magnetic field oscillate at the observer's location? 2 Submit revious Answers Request Answer X Incorrect; Try Again; 5 attempts remaining

Answer 1

Part (A) The electric charge oscillating along the z axis, so the direction of electric field oscillates at the observer's location is along the z axis Hence, first option is correct. Part (B) At the observer's location, the electromagnetic wave propagates along y axis. The wave propagation (electromagnetic wave) is perpendicular to both electric field and magnetic field That is, S-ExB Here, S is the wave propagation, E is the electric field, and B is the magnetic field. Since wave propagates along y axis and electric field oscillates along the z axis, so the magnetic field oscillates along x axis. Hence, y-zxji Therefore, the direction of magnetic field oscillates at the observer's location is along the x axiS Hence, first option is correct.