Electrostatics Flashcards
Coulomb’s Law describes the
Electrostatic force between two charges
Charge is displayed by the letter
q
What is the charge of a charged subatomic particle?
1.60E-19
What is the equation for Coulomb’s Law?
F = K • q1q2 / r^2
What is the value of K within Coulomb’s Law?
K = 8.99E9
Every electric charge sets up an
Electric field
What is the equation for electric field?
E = F / q0
The electric field points in the same direction as the F if it the test charge is
Positive
In a negative test charge, the electric field experiences a force in the
Opposite direction
For any 1, single charge, what is the electric field?
E = k • q/r^2
The electric field of a positive charge points
Outwards
The electric field of a negative charge points
Inwards
The electric field decreases with
Distance
Field lines indicate the
Relative strength of the electric field
The closer together the field lines are, the
Stronger the electric field
The further apart the field lines are, the
Weaker the electric field
The vector sum is the
Total electric field at a point in space
What is the equation for electric potential?
V = W / q0
The potential difference in electric potential is
Vb - Va = Wab / q0
At the equipotential line, the
Potential at every point is the same
The electrical potential energy (U) is the amount of
Work required to move the charge from infinity to another point
What is the equation of electrical potential energy (U)?
U = q • v or k • qQ/r
An electric dipole is formed when
Two equal and opposite charges are a small distance away from one another
Dipole momentum (p) is a product of
g • d
The energy of a dipole is denoted by the equation
E = k • p / r^3
What is the magnitude of force of a moving charge?
F = qvBsin0
