a dipole is located on a sheet of paper. in the plane of that paper, a student w

Question

a dipole is located on a sheet of paper. in the plane of that paper, a student was asked to carefully sketch the electric field lines for this dipole and the equipotential curves where the equipotential surfaces intersect the paper. Problem 18.27: Dipole Part A ted this dipole and the on a sheet of paper. In the plane of that paper, a student was asked to carefully sketch the electric field lines for tential curves where the equipotential surfaces intersect the paper Figure A Figure B Electric field lines Cross sections of equipotential surfaces at 20 V intervals Figure D Figure C Which of the figures above corresponds to the correct sketch based on the instructions given to the student? ANSWER Figure A Figure B Figure C Figure D

Explanation / Answer

Figure C is correct.

Figure A and figure D are straightaway incorrect because the direction for E lines fore these two figures are opposite (inward for positive and outward for negative). So we are now left with figures B and C.

B and C are both correct for E lines. So, we need to check for the equipotential surface sketch. Equipotential mans same potential at all points. So it needs to be circular, which is the case for figure C but not figure B. So, figure C is correct.

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