AC Circuits
This flow of electrons occurs only in AC circuits, not DC circuits.
What is oscillating (going back and forth)?
The conservation of charged is described in this Law.
What is Kirchoff's Current Law?
We can use this method to calculate the total capacitance of a parallel circuit.
What is CT = C1 + C2 + ...?
What is generating back emf?
What is Henry?
This law describes the relationship between the induced voltage in a coil and the rate of magnetic flux.
What is Faraday's Law?
This is the difference between terminal voltage and electromotive force.
What is I*r?
This condition causes a capacitor to stop charging, despite being connected to the power supply.
What is electrostatic force = electromotive force?
This is the amount of current flowing through an inductor after two time constants, assuming a maximum current of 1 Amp.
What is 0.86 Amps?
A familiar one, this law describes the relationship between current, voltage, and resistance.
What is Ohm's Law?
Using these can increase the efficiency of a transformer by directing the magnetic field.
This law is a fundamental truth of the universe but is also the basis for Kirchoff's voltage law.
What is conservation of energy?
A dimensionless value, this describes the relative permittivity of a substance.
What is Ɛr?
What is Lenz's Law?
This unit is used to measure magnetic flux.
What is Weber?
Causing current to lead source voltage, meeting this condition depends on the source frequency.
What is Capacitive reactance is greater than Inductive reactance?
This method is the best for connecting capacitors to store energy.
Doubling this value will quadruple the energy stored in a capacitor
What is Voltage?
While the magnetic flux is constant, you can change the emf experienced by altering this in a transformer.
What is number of loops?
0.0133 Henries/Farads
If both inductance and Capacitance are equal to 10 (of their respective units), this will be the resonant frequency of the circuit.
0.159 Hz
This is the name of any material inserted between the two plates of a capacitor to increase the capacitance.
What is a Dielectric?
This labelled graph shows the voltage and current during the discharge of a capacitor in a simple circuit with 12V and a 6 Ohm resistor
A graph with a Y-axis labelled with 12V and 2 Amps at the maximum value, with the 63% decay rate in both.
This labelled graph shows the voltage and current during the charging of an inductor in a simple circuit with 12V and a 6 Ohm resistor.
Y axis maximum as 12V and 2 Amps
Voltage starts at maximum, current at minimum.
Voltage decays at 63% per time constant, Current increases by the same.
This is the operating Frequency of New Zealand's Electrical Grid
What is 50 Hz?