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For the situation described in figure, the magnetic field changes with time according to `B=(2.00t^3-4.00t^2+0.8)t` and `r_2=2R=5.0cm` (a) Calculate the force on an electron located at `P_2` at `t = 2.00 s`(b) What are the magnitude and direction of the electric field at `P_1` when `t = 3.00 s` and `r_1= 0.02 m`. |
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Answer» a. At `P_2` `El=(dphi)/(dt)` `E(2pir_2)=piR^2.(dB)/(dt)` `:. E=R^2/(2r_2)((dB)/(dt))` |
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