My previous request was flagged. So here is provided proof that this is not an existing test. As you can see this Test was written on the 20th of October. It is a past paper. "OMEZ4.3.1.2.UWC-PHYSICS 222 (EM) TEST2chargeA wire which carries uniform eurrentà density is shaped in a quarter circleof radius R. as shown in the sketch.(a) Use Coulomb's law to derive anexpression for the electric field atpoint P, the centre of curvature. Leaveyour answer in unit vector notation (6)Thursday 20 October 2022Write down the laws specifying the divergence and curl of the both electrostatic and magnostaticfields and name them.(b) What is the magnitude and direction ofthe field at P?(2)(c) Sketch the electric field at point P. (1)(d) Without calculation, what is the fieldpoint P for the situation shown?Motivate your answer.A straight wire of length 21 carries uniformline charge density . Use Coulomb's law toshow that the components of the electricparallel to the wire cancel.V₁=R²G(2)A spherical shell of radius R carries uniform surface a.(a) Show that the potential inside and outside theshell is respectively given byR²oE[6]and V= respectively. (6)(b) Use - VV to derive the expressions for theelectric field inside and outside the shell. (3)[9]magaA HOBUS NIETLJENSIALISTEINLWYERPGthe0[6]www.un[11]L x8000000+VOL1SHS-2 charge2. A wire which carries uniform eurrenà density is shaped in a quarter circleof radius R. as shown in the sketch.(a) Use Coulomb's law to derive anexpression for the electric field atpoint P, the centre of curvature. Leaveyour answer in unit vector notation (6)(b) What is the magnitude and direction ofthe field at P?(c) Sketch the electric field at point P. (1)(d) Without calculation, what is the fieldpoint P for the situation shown?Motivate your answer.(2)x[11]

charge 2. A wire which carries uniform euren à density is shaped in a quarter circle of radius R. as shown in the sketch. (a) Use Coulomb's law to derive an expression for the electric field at point P, the centre of curvature. Leave your answer in unit vector notation (6) (b) What is the magnitude and direction of the field at P? (2) eld at point P. (1)

charge 2. A wire which carries uniform euren à density is shaped in a quarter circle of radius R. as shown in the sketch. (a) Use Coulomb's law to derive an expression for the electric field at point P, the centre of curvature. Leave your answer in unit vector notation (6) (b) What is the magnitude and direction of the field at P? (2) eld at point P. (1)

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter7: Electric Potential

Section: Chapter Questions

Problem 72P: The practical limit to all electric field in air is about 3.00106 N/C. Above this strength, sparking...

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