electricity
AC current-✔changes direction and instantaneous value with time
EMF-✔the energy supplied to each coulomb of charge passing through the
battery.
Lost volts-✔The potential difference across the internal resistor of a source
of e.m.f.
Internal resistance-✔resistance inside the source of electrical energy.
terminal potential difference (t.p.d.)-✔Voltage that appears across the
terminals of a source when the source is supplying a current to a circuit. It
is the potential difference that appears in the circuit.
short circuit-✔A connection that allows current to take the path of least
resistance
open circuit-✔an incomplete electrical circuit in which no current flows
Information from a Vtpd vs Current Graph.-✔Y Intercept - EMF
X Intercept - Short Circuit Current
Gradient = -r
1 Farad-✔1 coulomb of charge stored per unit volt
Capacitance (C)-✔Measured in Farads (F)
Charge (Q)-✔Measured in Coulombs (C)
Area under a Q vs V graph.-✔Energy Stored in a capacitor.
Voltage vs Time for Charging Capacitor-✔
AC current-✔changes direction and instantaneous value with time
EMF-✔the energy supplied to each coulomb of charge passing through the
battery.
Lost volts-✔The potential difference across the internal resistor of a source
of e.m.f.
Internal resistance-✔resistance inside the source of electrical energy.
terminal potential difference (t.p.d.)-✔Voltage that appears across the
terminals of a source when the source is supplying a current to a circuit. It
is the potential difference that appears in the circuit.
short circuit-✔A connection that allows current to take the path of least
resistance
open circuit-✔an incomplete electrical circuit in which no current flows
Information from a Vtpd vs Current Graph.-✔Y Intercept - EMF
X Intercept - Short Circuit Current
Gradient = -r
1 Farad-✔1 coulomb of charge stored per unit volt
Capacitance (C)-✔Measured in Farads (F)
Charge (Q)-✔Measured in Coulombs (C)
Area under a Q vs V graph.-✔Energy Stored in a capacitor.
Voltage vs Time for Charging Capacitor-✔
