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Questions and Answers
What is the direction of the electric field due to an infinite long wire at a point near the wire?
What is the direction of the electric field due to an infinite long wire at a point near the wire?
A charge is distributed uniformly over a circular ring of radius R. What is the direction of the electric field at the center of the ring?
A charge is distributed uniformly over a circular ring of radius R. What is the direction of the electric field at the center of the ring?
What is the electric field due to a uniformly charged infinite plane sheet at a point near the sheet?
What is the electric field due to a uniformly charged infinite plane sheet at a point near the sheet?
A charge is distributed uniformly over a disk of radius R. What is the direction of the electric field at a point on the axis of the disk and outside the disk?
A charge is distributed uniformly over a disk of radius R. What is the direction of the electric field at a point on the axis of the disk and outside the disk?
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What is the electric field due to a uniformly charged sphere at a point outside the sphere?
What is the electric field due to a uniformly charged sphere at a point outside the sphere?
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Study Notes
Electric Field Due to Various Charge Distributions
Infinite Long Wire
- The direction of the electric field due to an infinite long wire at a point near the wire is radial, emanating from the wire.
Uniformly Charged Circular Ring
- The direction of the electric field at the center of a uniformly charged circular ring is zero, as the electric field lines from each part of the ring cancel out at the center.
Uniformly Charged Infinite Plane Sheet
- The electric field due to a uniformly charged infinite plane sheet at a point near the sheet is perpendicular to the sheet and has the same magnitude at all points near the sheet.
Uniformly Charged Disk
- The direction of the electric field at a point on the axis of a uniformly charged disk and outside the disk is along the axis, away from the disk.
Uniformly Charged Sphere
- The electric field due to a uniformly charged sphere at a point outside the sphere is radial, emanating from the center of the sphere, and is identical to that of a point charge at the center of the sphere.
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Description
This quiz covers electric field concepts, including the direction of electric fields near infinite long wires, circular rings, and uniformly charged infinite plane sheets.
