Studied by 5 people
Coulomb's law
Like charges repel each other; unlike charges attract.
electric field
a region of space where a small positive test charge experiences a force due to its charge
electric field strength
force per unit charge experienced by a positive test charge placed in the field
Moving charge
the amount of charge that passes a fixed point in a given period of time
current
flow of electric charge
potential difference
the work done by moving a positive test charge from one point to another in an electric field
electron-volt
the energy required to accelerate an electron across a potential difference of 1 volt
Internal resistance
Resistance of the cell. As current flows through internal resistance, some energy is converted from electrical to heat inside the cell.
resistance
Rate at which charge can flow through a conductor
emf
Amount of chemical energy converted to electrical energy, per unit charge.
ohmic and non ohmic behavior
Ohmic conductor obeys the Ohm's Law (V=IR), which means that the potential difference is proportional to current. Non-ohmic conductor doesn't obey Ohm's Law.
parallel resistors
1/r = 1/r1 + 1/r2
in series resistors
r = r1 +r2
voltmeter connected in
parallel
ammeter connected in
series
secondary cell
can be recharged after use by passing current through the circuit in opposite direction to the current during discharge
Note 
Flashcard (46)