Domanda del libro di testo
FIGURE EX26.8 shows a graph of V versus x in a region of space. The potential is independent of y and z. What is Ex at (a) x=−2 cm, (b) x=0 cm, and (c) x=2 cm?
158
views
Ch 26: Potential and Field
Knight Calc5th EditionPhysics for Scientists and EngineersISBN: 9780137344796
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch 01: Concepts of Motion35
- Ch 02: Kinematics in One Dimension75
- Ch 03: Vectors and Coordinate Systems58
- Ch 04: Kinematics in Two Dimensions60
- Ch 05: Force and Motion23
- Ch 06: Dynamics I: Motion Along a Line53
- Ch 07: Newton's Third Law27
- Ch 08: Dynamics II: Motion in a Plane52
- Ch 09: Work and Kinetic Energy56
- Ch 10: Interactions and Potential Energy50
- Ch 11: Impulse and Momentum56
- Ch 12: Rotation of a Rigid Body71
- Ch 13: Newton's Theory of Gravity52
- Ch 14: Fluids and Elasticity44
- Ch 15: Oscillations55
- Ch 16: Traveling Waves37
- Ch 17: Superposition39
- Ch 18: A Macroscopic Description of Matter53
- Ch 19: Work, Heat, and the First Law of Thermodynamics60
- Ch 20: The Micro/Macro Connection53
- Ch 21: Heat Engines and Refrigerators34
- Ch 22: Electric Charges and Forces40
- Ch 23: The Electric Field39
- Ch 24: Gauss' Law32
- Ch 25: The Electric Potential63
- Ch 26: Potential and Field57
- Ch 27: Current and Resistance42
- Ch 28: Fundamentals of Circuits39
- Ch 29: The Magnetic Field47
- Ch 30: Electromagnetic Induction60
- Ch 31: Electromagnetic Fields and Waves32
- Ch 32: AC Circuits63
- Ch 33: Wave Optics32
- Ch 34: Ray Optics57
- Ch 35: Optical Instruments30
- Ch 36: Special Relativity38
- Ch 37: The Foundations of Modern Physics25
- Ch 38: Quantization49
- Ch 39: Wave Functions and Uncertainty31
- Ch 40: One-Dimensional Quantum Mechanics35
- Ch 41: Atomic Physics18
- Ch 42: Nuclear Physics27
Knight Calc5th EditionPhysics for Scientists and EngineersISBN: 9780137344796Non è quello che usi tu?Cambia libro di testo
Capitolo 26, Problema 5a
Which point in FIGURE EX26.5, A or B, has a larger electric potential?
Guida verificata passo dopo passo1
Step 1: Understand the relationship between electric potential and electric field. The electric potential decreases in the direction of the electric field. The formula for the change in electric potential is ΔV = -E * d, where E is the magnitude of the electric field and d is the distance moved in the direction of the field.
Step 2: Analyze the diagram. The electric field is uniform and directed horizontally to the right, with a magnitude of E = 1000 V/m. Points A and B are separated vertically by 3 cm and horizontally by 7 cm.
Step 3: Determine the relative positions of points A and B. Point A is higher vertically, while point B is lower and further to the right. Since the electric field is horizontal, the vertical separation does not affect the electric potential difference.
Step 4: Calculate the horizontal displacement between points A and B. The horizontal distance is 7 cm (0.07 m). Use the formula ΔV = -E * d to find the potential difference due to this displacement. Since point B is further to the right, it is in the direction of the electric field, meaning its potential is lower than point A.
Step 5: Conclude that point A has a larger electric potential than point B because the electric potential decreases in the direction of the electric field, and point B is further along the field direction.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Concetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Electric Potential
Electric potential, measured in volts, represents the potential energy per unit charge at a point in an electric field. It indicates how much work is needed to move a charge from a reference point to a specific point within the field. In this context, the electric potential at points A and B can be compared based on their positions relative to the electric field.
Video consigliato:
Percorso guidato
07:33
Electric Potential
Electric Field
An electric field is a region around a charged object where other charged objects experience a force. It is represented by field lines, with the direction indicating the force on a positive charge. The strength of the electric field (E) is given in volts per meter (V/m) and affects the electric potential at different points within the field.
Video consigliato:
Percorso guidato
03:16Intro to Electric Fields
Relationship Between Electric Field and Potential
The relationship between electric field and electric potential is defined by the equation E = -dV/dx, where E is the electric field strength and dV/dx is the change in electric potential over distance. This means that in a uniform electric field, the potential decreases in the direction of the field. Thus, the point closer to the positive charge will have a higher electric potential.
Video consigliato:
Percorso guidato
03:43Relationships Between Force, Field, Energy, Potential
Pratica correlata
Domanda del libro di testo
What is the potential difference between A and B?
121
views
Domanda del libro di testo
FIGURE EX26.3 is a graph of Ex. What is the potential difference between xi=1.0 m and xf=3.0 m?
2372
views
Domanda del libro di testo
What is the potential difference between xi = 10 cm and xf = 30 cm in the uniform electric field Ex=1000 V/m?
71
views
Domanda del libro di testo
What are the magnitude and direction of the electric field at the dot in FIGURE EX26.6?
228
views