1. A The magnetic field B, at all points within a circular region of radius R 2.50 cm, is uniform in space and directed as shown in figure. If the magnetic field is increasing at a rate of dB/dt = 2.00 T/s, find the magnitude and direction of the electric force on a stationary positive point charge q = 4.00 C located at: a) point a, a distance - 2.00 cm above the center of the region. (6 points) b) point b, a distance r = 2.00 cm to the right of the center of the region. (6 points) c) point c, at the center of the region. (3 points)