(B) At What Time T3 Does The Electric Field At Location A Change?

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EM: accelerated accuse and East field

• Thread starter ladki6
• Start engagement April 7, 2006

An electron is initially at rest. At a fourth dimension t1 = 0 it is accerated upwardly with an acceleration of 10^xviii 1000/due south^ii for a very short time (this big acceleration is possible considering the electron has a very modest mass). Nosotros make observations at a point A, which is 15 meters to the correct of the electron's initial position.

a. At time t2 = 1 ns, what is the magnitude and management of the electric field at point A?
b. At what time t3 will the electric field at location A modify?
c. What is the direction of the radiative electrical field at location A at time t3?
d. What is the magnitude of this radiative electrical field?
e. Just after time t3, what is the management of the magnetic force on a positive accuse that was initially at rest at location A? Explicate with a diagram.

I need equations for (a) and (b) at least. Thanks.

Answers and Replies

Acceleration is the 2nd derivative of position (spatial) with respect to time. And then decide the position at 1 ns for part a. One finds the position of the electron 1 ns after being accelerated, and from that one determines the electric field due to the electron at xv m to the right (pt A) from where the electron started at t=0. The problem does not state annihilation near an applied electric field, which is basically how one accelerates charges.

Part b, is asking simply how long does the influence of the change in the electron'due south position take to reach point A. Think of t = distance/velocity.

Acceleration is the second derivative of position (spatial) with respect to time. So determine the position at 1 ns for role a. Ane finds the position of the electron ane ns after being accelerated, and from that one determines the electric field due to the electron at 15 thousand to the correct (pt A) from where the electron started at t=0. The trouble does not state anything nearly an applied electrical field, which is basically how one accelerates charges.

Part b, is request just how long does the influence of the change in the electron's position accept to achieve point A. Think of t = distance/velocity.

Okay, it has been forever since calc for me so to determine position.... what do I do?

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