Within the green dashed circle shown in the figure below, the magnetic field changes with time according to the expression
B = 9.003 - 1.0012 + 0.800, where B is in teslas, t is in seconds, and R = 2.75 cm.
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(a) When t = 2.00 s, calculate the magnitude of the force exerted on an electron located at point Pj, which is at a distance
= 5.50 cm from the center of the circular field region.
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(b) When t = 2.00 s, calculate the direction of the force exerted on an electron located at point P1, which is at a distance
r1 = 5.50 cm from the center of the circular field region.
O tangent to the electric field line passing through point Pj 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 tine after t = 0 s.)