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What happens when like charges are brought near each other?
They repel each other.
What happens when opposite charges are brought near each other?
They attract each other.
What is the effect of increasing the distance between two charges?
The electrostatic force between them decreases (inversely proportional to the square of the distance).
What is the effect of increasing the charge magnitude on the electric field?
The electric field strength increases.
What happens when a charge is placed in an electric field?
The charge experiences a force: $$F = qE$$
How do you calculate the electric field due to a point charge?
Use the formula: $$E = k frac{|q|}{r^2}$$, where E is the electric field strength, k is Coulomb's constant, q is the magnitude of the charge, and r is the distance from the charge.
How do you calculate electric flux?
Use the formula: $$Phi_E = E cdot A = EA cos( heta)$$, where E is the electric field, A is the area, and ฮธ is the angle between the field and the area vector.
How do you apply Gauss' Law to find the electric field?
1. Choose a Gaussian surface. 2. Calculate the electric flux through the surface. 3. Relate the flux to the enclosed charge using $$oint E cdot dA = frac{Q_{enc}}{epsilon_0}$$. 4. Solve for the electric field E.
What are the key differences between electric force and gravitational force?
Electric Force: Can be attractive or repulsive. | Gravitational Force: Only attractive.
What are the differences between electric potential and electric field?
Electric Potential: Scalar quantity, measured in Volts. | Electric Field: Vector quantity, measured in N/C.
How does the electric field vary with distance (r) for a point charge versus electric potential?
Electric Field: Varies as $$1/r^2$$. | Electric Potential: Varies as $$1/r$$.