Answer: ________ (b) What is the magnitude of the electric field atlocation P? (

Question

   Answer: ________ (b) What is the magnitude of the electric field atlocation P? (Hint: remember that "emf" is the integralof the non-Coulomb electric field around a closed path.) ________ N/C    Answer: ________ (d) What is the magnitude of the "curly" electric fieldat location Q? ________ N/C

Explanation / Answer

a) because the magnetic field is out of the page and increaserespect to time t =>the "curly" electric field must beclockwise => direction of the "curly" electric field at P is upward b) we have : E*2r1 = emf = r1^2*dB/dt = r1^2*3bt^2 => E(r1) = (3/2)r1*b*t^2 = 0.16731N/C c) Similarly the part a => the "curly" electric field mustbe clockwise => direction of the "curly" electric field at Q is downward d) we have : E(r2)*2r2 = emf = R^2*3bt^2 => E(r2) = (3/2)*b*(Rt)^2/r2= 0.14872N/C

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