B2 - Electric Field and Gauss's Law

what charge does a test charge carry?

positive

a test charge has a ____ magnitude of charge

negligible

what is the formula for force (F) on particle in terms of q(charge) and E(electric field)?

F=qE

what is the formula for force (F) in terms of coloumb’s constant (k), charge of “source particle” (Q), and distance from “source particle”?

k(Q/r^2)

what is the formula for k in terms of permeability of air (e)?

1/4(pi)e

how do you find electric field?

adding all present electric field vectors

electric field lines point ____ positive charges and ___ negative charges

away, towards

the stronger the electric field, the ____ the field lines

denser

electric fields have the ____ at all points

same magnitude

acceleration of a charged particle is ___ to the electric field

tangent

compare particles q and 2q, the 2q particle will have __ the amount of field lines going through (relatively)

twice

there is ____ in the hollow space of metal conducting sphere

no electric field

there is ____ in the “border (the actual metal)” of metal conducting sphere

no electric field

electric field is ____ to the surface of a conductor

perpendicular

what is formula for total electric flux? (Qnet and permittivity of free space)

Qnet/permittivity of free space