B) determine the direction of the magnetic field at point p, located at the center of the square of edge length ℓ = 0.200 m. to the left to the right upward downward into the page out of the page correct: your answer is correct. (c) what if? what would be the magnitude and direction of the initial acceleration of an electron moving with velocity 3.63 ✕ 105 m/s into the page at point p?