#6.1.2a(i)
uniform electric field \(E = \dfrac{V}{d} \)
#6.1.2a(ii)
the electric field of a charged object, and the force on a charge in an electric field; inverse square law for point charge
Spherically symmetrical charged conductor is equivalent to a point charge at its centre
#6.1.2a(iii)
electrical potential energy and electric potential due to a point charge; \(\dfrac{1}{r} \) relationship
#6.1.2a(iv)
evidence for discreteness of charge on electron
Such as the Millikan oil drop experiment
#6.1.2a(v)
the force on a moving charged particle due to a uniform magnetic field
#6.1.2a(vi)
similarities and differences between electric and gravitational fields.
#6.1.2b
Make appropriate use of:
(i) the terms: charge, electric field, electric potential, equipotential surface, electronvolt
by sketching and interpreting:
(ii) graphs showing electric potential as area under a graph of electric field versus distance, graphs showing changes in electric potential energy as area under a graph of electric force versus distance between two distance values
(iii) graphs showing force as related to the tangent of a graph of electric potential energy versus distance, graphs showing field strength as related to the tangent of a graph of electric potential versus distance
(iv) diagrams of electric fields and the corresponding equipotential surfaces.
#6.1.2c(i)
for radial components
\(F_{electric} = \dfrac{kqQ}{r^2}\),
\(E_{electric} = \dfrac{F_{electric}}{q} = \dfrac{kQ}{r^2}\) where \(k = \dfrac{1}{4πε_0} \)
#6.1.2c(ii)
\(E_{electric} = -\dfrac{dV_{electric}}{dr} \),
\(E_{electric} = \dfrac{V}{d} \) (for a uniform field)
#6.1.2c(iii)
electrical potential energy = \(\dfrac{kQq}{r} \),
\(V_{electric} = \dfrac{kQ}{r}\)
#6.1.2c(iv)
\(F = qvB \)