An electron is initially at rest. At time t1 = 0 it is accelerated upward with an acceleration of 1 × 1018 m/s2 for a very short time (this large acceleration is possible because the electron has a...

An electron is initially at rest. At time t1 = 0 it is accelerated upward with an acceleration of 1 × 1018 m/s2 for a very short time (this large acceleration is possible because the electron has a very small mass). We make observations at location A, 15 meters from the electron (Figure 24.119).

(a) At time t2 = 1 ns (1 × 10−9 s), what are the magnitude and direction of the electric field at location A due to the

electron?

(b) At what time t3 does the electric field at location A change?

(c) What is the direction of the radiative electric field at location A at time t3?

(d) What is the magnitude of this electric field? How does it compare to the magnitude of the field at location A at

time t2?

(e) Just after time t3, what is the direction of the magnetic force on a positive charge that was initially at rest at

location A? Explain with a diagram.