Group 2 -- Physics

When a charge moves in an electric field, it generally experiences a change in kinetic energy, and in electrical potential energy, due to the ___ done on it by the electric field

• Energy

• Work

• Force

• Motion

Which of the following does define equipotential lines/equipotential surfaces

• Equipotential surfaces must be parallel to electric field at no point

• Not all points in the line or surface is of the same electric potential

• Diagrammatic representation of electric potential (lines for 2-D. surfaces for 3-D)

What is the formula for electric potential due to a single point charge

• W = Fs

•  V = k Q/r

• KE = 1/2mv²

• U = K q¹q²/r

It is a measure of how much energy a charge can acquire (or lose) in a given situation (or change in position).

• Charge

• Electric Field

• Capacitance

• Potential Difference

A measure of the resistance encountered when forming an electric field in a medium or how much a material resists an electric field.

• Permittivity

• Electric Displacement

• Permeability

• Potential Difference

Electric potential is ______; electric field is _______

• Vector, Scalar

• Resistance, Charge

• Scalar, Vector

• Charge, Resistance

Capacitance is a variable that relates amount of charge (q) in a capacitor and associated potential difference (V) with 1 Coulomb/Volt or 1 farad (F) being its unit

• True

• False

• None of the above

In the equation for capacitance, ε₀ refers to:

• electric potential or voltage

• distance from source charge

• the permittivity of free space

• the permeability of free space

_______ may be induced by the presence of a dielectric material.

• Microwaves

• Polarization

• UV Radiation

• X-rays

Consider two conductors, separated by some distance, that carry equal but opposite charges, +Q   and -Q; work must be done to create this separation of charge, and, as a result, potential energy is stored; such are pair of conductors comprise a system called a(n) ___ 

• Potential Difference

• Capacitance

• Capacitors

• Electromagnetic Field