Within the green dashed circle shown in the figure below, the magnetic field cha

Question

Within the green dashed circle shown in the figure below, the magnetic field changes with time according to the expression B = 7.00 t^3 - 2.00 t^2 + 0.800, where B is in teslas, t is in seconds, and R = 2.30 cm. When t = 2.00 s, calculate the magnitude of the force exerted on an electron located at point P_1, which is at a distance r_1 = 4.60 cm from the center of the circular field region. N When t = 2.00 s, calculate the direction of the force exerted on an electron located at point P_1, which is at a distance r_1 = 4.60 cm from the center of the circular field region. tangent to the electric field line passing through point P_1 and clockwise tangent to the electric field line passing through point P_1 and counterclockwise The magnitude is zero. At what instant is this force equal to zero (Consider the time after t = 0 s.) s

Explanation / Answer

a)

at point p1 the magnetic field is zero

so F = 0 N

b)

the magnitude is zero

c)

at any instant force is zero

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