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capacitance
the amount of charge that can be stored at a given voltage by a capacitor
capaticance is measured in
farads (F)
coulombs per volt (C/V)
electric field
indicates the force that would act on a unit positive test charge if placed at that location
exists at every point in space
force per unit charge
electric field is measured in
volts per meter (V/m)
newtons per coulomb (N/C)
current
the flow of charged particles
current is measured in
ampere (A)
coulombs per second (C/s)
power
the amount of energy transferred or converted per unit time
a measure of the rate at which work is done
power is measured in
watts (W)
joules per second (J/s)
resistance
a measure of the opposition to the flow of current
resistance is measured in
ohms (Ω)
volts per ampere (V/A)
electric potential energy
the energy stored in a configuration of charged objects
potential energy
the energy of an object or system due to the body’s position relative to other objects, or the configuration of its particles
potential energy is measured in
joules (J)
electric potential/voltage
the amount of work/energy needed per unit of electric charge to move the charge from a reference point to a specific point in an electric field
the difference in potential energy per unit charge between two locations in an electric field
field x distance
electric potential/voltage is measured in
volts (V)
joules per coulomb (J/C)
resistivity
describes the extent to which a material opposes the flow of electric current through it
time constant
the time taken by a capacitor to be charged to 63.2% of its maximum value theough a resistor connected to it in series
magnetic field
a region around a magnetic material, amoving electric charge, or a changing electric field within which the force of magnetism acts
magnetic field is measured in
tesla (T)
weber per square meter (Wb/m²)
emf (electromotive force)
not a force
the energy transfer per unit of electric charge
voltage that drives electric current
emf (electromotive force) is measured in
volts (V)
joules per coulomb (J/C)
magnetic flux
a measure of the total magnetic field which passes through a given surface
magnetic flux is measured in
webers (Wb)
tesla square meters (Tm²)
volt seconds (Vs)
joules per ampere (J/A)
specific heat
the heat required to raise the temperature of one gram of a substance by one Kelvin or degree Celsius
specific heat is measured in
joules per gram kelvin (J/gK)
index of refraction
a measure of how much the path of light is bent, or refracted, when entering a material
a measure of how much light slows down when passing through a medium compared to a vacuum
decay constant
the probability per unit time that a radioactive nucleus will decay
work function
the minimum wuantity of energy required to remove an electron to infinity from the surface of a given solid