Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है
SubjectsPhysics
बिंदु आवेश और विद्युत द्विध्रुव के कारण विभव
This Class 12 Physics topic explains how electric potential is calculated due to a single point charge and an electric dipole, within the chapter Electrostatic Potential and Capacitance. Students learn the meaning of potential, apply the relation between charge, distance, and potential, and use the principle of superposition for multiple charges. The topic also develops understanding of dipole potential at axial and equatorial positions, sign conventions, direction-independent potential, and the physical interpretation of equipotential surfaces.
TOPIC PRACTICE
Up to 2 questions from this page. Select your focus, then start.
The electrostatic potential energy of a dipole in a uniform electric field is U = −pE cosθ. In the parallel, stable position, the dipole moment is along the field, so θ = 0° and cos0° = 1. Hence U = −(3)(4)(1) = −12 J. The positive value has the wrong sign, while zero belongs to the perpendicular position. Option C is correct.
Yes, this is possible because electric field and electric potential are different physical quantities. The field is related to the spatial rate of change of potential, E = -grad V, and is a vector; contributions can cancel in direction. Potential is a scalar and contributions add algebraically, so it may remain nonzero even where the net field is zero. Option A is correct. B falsely links their zeros, C misidentifies potential as a vector, and D is irrelevant.
QUIZ COMPLETE
