Equation Recap (DNF) Flashcards
what is the equation for uniform electric field strength
E = V / d
what is the equation for general electric field strength
E = F / Q
what is the equation for the force a charged particle feels in an electric field
F = EQ
what is the equation for the acceleration of a charged particle in an electric field
- F = EQ = ma
- a = EQ / m
what is the equation for equipotential
V = E(p) / Q
what is the equation for the kinetic energy of a charged particle in an electric field
E(k) =QV
what is the equation showing that the weight of an oil drop equals the viscous drag force it experiences
mg = 6 pi r n v
what is the equation showing that the weight of the oil drop equals the electric force
mg = EQ
what is the equation for the radial field strength at a distance r from a charge Q
E = Q / 4 pi e(0) r^2
what is the equation for the radial field potential at a distance r from a charge Q
V = Q / 4 pi e(0) r
what is the value of k = 1 / 4 pi e(0)
8.99x10^9
therefore what can the equations for radial field strength and radial field potential
- E = kQ / r^2
- V = kQ / r
what is the equation for coulombs law
- F = Q1Q2 / 4pi e(0) r^2
- F = kQ1Q2/ r^2
in the charged pair of balloons setup, what is the equation for F(e) in terms of T
F(e) = T sin0
in the charged pair of balloons setup, what is the equation for weight (mg) in terms of T
mg = T cos0
in the charged pair of balloons setup, what does mgd / L equate to
- mgd / L = F
- mgd / L = kQ1Q2 / r^2
what is the equation for capacitance
C = Q / V
what is the equation for energy stored in a capacitor
E = QV / 2
what are the two equation for energy stored in a capacitor in terms of C
- E = CV^2 / 2
- E = Q^2 / 2C
what is the equation for the discharge of charge across a capacitor overtime
Q(t) = Q(0) * e^-t / CR
what is the equation for the discharge of current across a capacitor overtime
I(t) = I(0) * e^-t / CR
what is the equation for the discharge of pd across a capacitor overtime
V(t) = V(0) * e^-t / CR
what is the equation for the time constant of a capacitor
T = CR
what is the equation for the charging of current across a capacitor overtime
I(t) = I(0) * e^-t / CR
what is the equation for the charging of charge across a capacitor overtime
Q(t) = Q(0) * (1 - e^-t / CR)
what is the equation for the charging of pd across a capacitor overtime
V(t) = V(0) * (1 - e^-t / CR)
what is the equation for magnetic flux, taking components into consideration
(Io) = BA sin0
what is the equation for magnetic flux linkage, taking components into consideration
flux linkage = NBA sin0
what is the equation for the strength of a force on a wire which has current, whilst in a magnetic field, taking components into consideration
F = BIL sin0
by the way, what do i mean by taking components into consideration and why do i use sin0
- the component perpendicular to the field
- sin0 is used when 0 is the (smallest) angle between the wire and the field lines
what is the equation for the strength of a force on a charged particle moving across a magnetic field, considering components
F = BQv sin0
what is the equation for centripetal force
F = mv^2 / r
what is the equation for induced emf
emf = - delta NBA / delta t
what is the equation for frequency in terms of time period
f = 1 / T
what are the equations for the root-mean-square value of pd and current
- V(rms) = V(0) / root 2
- I(rms) = I(0) / root 2
what is the equation for the relationship between the number of turns of wire and the pd across the primary and secondary coil
Vp / Vs = Np / Ns
what is the equation for the radius a charged particle is travelling, not using force as a variable
r = mv / BQ
