Podcast
Questions and Answers
If a positive test charge is placed in an electric field, in which direction will the force on the charge point?
If a positive test charge is placed in an electric field, in which direction will the force on the charge point?
- Opposite to the direction of the electric field.
- In the same direction as the electric field. (correct)
- The force will be zero, as electric fields only affect negative charges.
- Perpendicular to the direction of the electric field.
Which statement accurately compares electric fields created by point charges and charged conducting spheres?
Which statement accurately compares electric fields created by point charges and charged conducting spheres?
- Electric fields around charged conducting spheres are similar to those of a point charge, with field lines directed radially. (correct)
- Electric fields are created only around point charges, not around charged conducting spheres.
- Electric fields around point charges are three-dimensional, whereas those around charged conducting spheres are two-dimensional.
- Electric fields around point charges are uniform, whereas those around charged conducting spheres are non-uniform.
What characterizes the electric field between two oppositely charged parallel plates?
What characterizes the electric field between two oppositely charged parallel plates?
- A non-uniform electric field with curved field lines.
- A uniform electric field with parallel, straight field lines directed from the positive to the negative plate. (correct)
- A diverging electric field originating from the center of the plates.
- An electric field that varies randomly in magnitude and direction.
Why do excess charges distribute evenly on the surface of a conducting sphere?
Why do excess charges distribute evenly on the surface of a conducting sphere?
Which of the following statements accurately describes how electric field lines are used to represent electric fields?
Which of the following statements accurately describes how electric field lines are used to represent electric fields?
Flashcards
Electric Field
Electric Field
A region where electric charges experience a force.
Electric Field Direction
Electric Field Direction
The direction of force on a POSITIVE charge.
Electric Field Lines
Electric Field Lines
Show direction and strength of the field.
Field around Point Charge
Field around Point Charge
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Field Between Parallel Plates
Field Between Parallel Plates
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Study Notes
Electric Field
- A region in space where an electric charge experiences a force.
- Electric fields are created by charged objects, similar to magnetic fields created by magnets.
- It is a vector quantity, possessing both magnitude and direction.
Direction of Electric Field
- Indicates the force acting on a positive charge at a specific point.
Electric Field Lines
- Used to represent the direction and magnitude of an electric field.
- Always point from positive to negative charges.
Electric Fields Around a Point Charge
- Field lines either point radially inwards or outwards.
- For a positive charge, field lines are directed radially outwards.
- For a negative charge, field lines are directed radially inwards.
Electric Fields Around a Charged Conducting Sphere
- Field lines resemble those of a point charge.
- Charges distribute evenly across the sphere's surface due to mutual repulsion.
- The conducting surface allows charge movement.
Electric Field Between Two Parallel Plates
- Produces a uniform electric field.
- Field lines run from positive to negative.
- Field lines are parallel and straight.
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