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  1. AP Physics C E M
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What are the key differences between electric force and electric potential?

Electric Force: A vector quantity, describes the interaction between charges. Electric Potential: A scalar quantity, represents potential energy per unit charge.

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What are the key differences between electric force and electric potential?

Electric Force: A vector quantity, describes the interaction between charges. Electric Potential: A scalar quantity, represents potential energy per unit charge.

How does electric potential and electric field vary with distance (r) from a point charge?

Electric Potential: Varies as 1/r. Electric Field: Varies as 1/r^2.

How do you calculate the electric field due to a point charge?

Use the formula: E=kfrac∣q∣r2E = k frac{|q|}{r^2}E=kfrac∣q∣r2, where k is Coulomb's constant, q is the charge, and r is the distance.

How do you calculate electric flux?

Use the formula: PhiE=EcdotA=EAcos(heta)Phi_E = E cdot A = EA cos( heta)PhiE​=EcdotA=EAcos(heta), where E is the electric field, A is the area, and θ 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 ointEcdotdA=fracQencepsilon0oint E cdot dA = frac{Q_{enc}}{epsilon_0}ointEcdotdA=fracQenc​epsilon0​. 4. Solve for the electric field E.

What is the procedure to determine electric potential from electric field?

  1. Determine the electric field E. 2. Integrate the electric field along a path: V=−intEcdotdlV = -int E cdot dlV=−intEcdotdl. 3. Evaluate the integral to find the potential difference.

How to find the net electric field due to multiple charges?

  1. Calculate the electric field due to each individual charge. 2. Add the electric field vectors, taking direction into account: Enet=E1+E2+...E_{net} = E_1 + E_2 + ...Enet​=E1​+E2​+...

What is electric charge?

A fundamental property of matter that can be positive or negative.

What is Coulomb's Law?

The law that quantifies the electrostatic force between two point charges: F=kfrac∣q1q2∣r2F = k frac{|q_1 q_2|}{r^2}F=kfrac∣q1​q2​∣r2.

What is electric potential difference (voltage)?

The work needed to move a charge between two points, measured in volts (V).

What is an electric field?

A region where a charge experiences a force; a vector field with magnitude and direction.

What is electric potential?

The potential energy per unit charge, a scalar quantity measured in volts (V).

What is electric flux?

A measure of the electric field passing through a given area: PhiE=EcdotA=EAcos(heta)Phi_E = E cdot A = EA cos( heta)PhiE​=EcdotA=EAcos(heta).

What is Gauss' Law?

Relates the electric flux through a closed surface to the enclosed charge: ointEcdotdA=fracQencepsilon0oint E cdot dA = frac{Q_{enc}}{epsilon_0}ointEcdotdA=fracQenc​epsilon0​.