An electron is initially at rest At time t1 0 it is acceler

An electron is initially at rest. At time t_1 = 0 it is accelerated upward with an acceleration of a = 1 Times 10^17 m/s^2 for a very short time (this large acceleration is possible because the electron has a very small mass). We make observations at location A, x = 17 meters from the electron (see the figure). At time t_2 = 3 ns (10^-9 s), what is the magnitude and direction of the electric field at location A due to the electron? magnitude: ? N/C direction: to the right downwards upwards zero field to the left At what time t_3 does the electric field at location A change? Ql.67fr-8 1X seconds What is the direction of the electric field at location A at time t_3? to the right downwards upwards zero field to the left What is the magnitude of this electric field? N/C A positively charged particle was initially at rest at location A. It is released from rest just after time t_3. Which of the following are true;ust after time t_3? (Select all that apply.) The positive charge will never be affected by the radiative magnetic field, since the positive charge is always at rest. The electric force on the positive charge is toward the electron. The electric force on the positive charge due to the radiative electric field is upward. There is a magnetic force to the right on the positive charge. The radiative msjneK field at location A is out of the page. The positive charge begins to move because there is a force on it due to the radiative electric field.

Solution

(a) we know that Electric Field

E = kQ/r²=9x10^9* 1.6x10^-19/17² =4.98x10^-12 N/C...........Ans. direction towards left

(b) The radiative electric field is first observed at

17/3x10^8 = 5.67x10^-8 sec..........Ans.

(c) to the left

(d) E = kQ*a/c²*r = 9x10^9*1.6x10^-19*1x10^17/(3x10^8)²*17 =9.41 x 10^-11 N/C

(e) All of them except first