All Flashcards
What is the effect of placing a positive test charge in an electric field?
The test charge experiences a force in the same direction as the electric field.
What happens when a conductor is in electrostatic equilibrium?
The electric field inside the conductor is zero, and excess charge resides on its surface.
What is the effect of increasing the density of electric field lines?
The strength of the electric field increases.
What happens to the electric field when a charged sphere is observed from a distance much larger than its radius?
The electric field behaves as if all the charge is concentrated at the center of the sphere.
What is the effect of bringing a charged object near a neutral conductor?
Charge redistribution occurs in the conductor, with opposite charges attracted to the charged object and like charges repelled.
What is the effect of placing a positive test charge in an electric field?
The test charge experiences a force in the same direction as the electric field.
What happens when a conductor is in electrostatic equilibrium?
Excess charge resides on the surface, and the electric field inside the conductor is zero.
What is the effect of increasing the density of electric field lines?
The strength of the electric field increases.
What happens when symmetry is present in electric field problems?
Calculations can be simplified, making the problem easier to solve.
Compare charge distribution in conductors vs. insulators.
Conductors: Excess charge sits on the surface. | Insulators: Excess charge can spread throughout the interior and surface.
Compare electric field inside conductors vs. insulators.
Conductors: The electric field inside is zero in electrostatic equilibrium. | Insulators: The electric field inside can be nonzero.
Differentiate between electric field lines near positive and negative charges.
Positive charges: Electric field lines point away from the charge. | Negative charges: Electric field lines point towards the charge.