Within the green dashed circle shown in the figure below, the magnetic field changes with time according to the expression B = 5.00t - 1.00t? + 0.800, where B is in teslas, t is in seconds, and R = 2.70 cm. (a) When t- 2.00 s, calculate the magnitude of the force exerted on an electron located at point P,, which is at a distance r, - 5.40 cm from the center of the circular field region. N (b) When t= 2.00 s, calculate the direction of the force exerted on an electron located at point P,, which is at a distance r, - 5.40 cm from the center of the circular field region. O tangent to the electric field line passing through point P, and clockwise O tangent to the electric field line passing through point P, and counterclockwise O The magnitude is zero. (c) At what instant is this force equal to zero? (Consider the time after t-0 s.)

Within the green dashed circle shown in the figure below, the magnetic field changes with time according to the expression B = 5.00t - 1.00t? + 0.800, where B is in teslas, t is in seconds, and R = 2.70 cm. (a) When t- 2.00 s, calculate the magnitude of the force exerted on an electron located at point P,, which is at a distance r, - 5.40 cm from the center of the circular field region. N (b) When t= 2.00 s, calculate the direction of the force exerted on an electron located at point P,, which is at a distance r, - 5.40 cm from the center of the circular field region. O tangent to the electric field line passing through point P, and clockwise O tangent to the electric field line passing through point P, and counterclockwise O The magnitude is zero. (c) At what instant is this force equal to zero? (Consider the time after t-0 s.)