Electric Forces and Field Lines

Flashcards summarizing key concepts related to electric forces, charges, and field lines based on the lecture notes.

Coulomb's Law

The mathematical relationship describing the force between two charged objects, defined as $F = k \frac{|q_1 q_2|}{d^2}$.

Positive Charge

A type of electric charge that repels other positive charges and attracts negative charges.

Negative Charge

A type of electric charge that repels other negative charges and attracts positive charges.

Attraction and Repulsion

Forces created by the interactions between charged objects; like charges repel, while opposite charges attract.

Net Force

The total force acting on an object, calculated by summing all individual forces acting on it.

Microcoulomb (µC)

A unit of electric charge equal to $10^{-6}$ coulombs.

Electric Field

A field around a charged object where other charges experience a force; represented by field lines.

Field Lines

Imaginary lines used to represent electric fields, with arrows indicating the direction of force on a positive charge.

k (Coulomb's Constant)

A constant value in Coulomb's Law, approximately equal to $9 \times 10^9 \, N \, m^2/C^2$.

Force of Attraction

The force felt between two charges of opposite sign, pulling them towards each other.

Force of Repulsion

The force felt between two charges of the same sign, pushing them away from each other.

Electric Field Strength (E)

Measured in newtons per coulomb (N/C), it represents the force experienced by a unit positive charge placed in a field.

Attractive Force

The type of force that acts to bring two objects closer together.

Repulsive Force

The type of force that acts to push two objects apart.

Distance in Coulomb's Law (d)

The separation distance between two charges, squared in the Coulomb's Law equation.

Test Charge

A small positive charge used to measure the electric field strength without disturbing the field.