Q=CV? Yeah. If you are super interested in the math for a condenser microphones, then you might want to get familiar with this equation. Another term for condenser mics is “capacitor mics.” In fact, it makes more sense to call them “capacitor mics” than condenser mics.
If you must know…
Q = Electrical Charge, when the capacitor is charged, an imbalance between the number of electrons
C = Capacitance or the ability of the capacitor to store a charge
V = Voltage
The condenser (capacitor) microphone can only produce a very weak current from the diaphragm. To be able to do this it must have an internal amplifier.