Final answer:
Capacitance is independent of voltage and is determined by the device's geometry and materials. Charge stored depends on both capacitance and the voltage applied. The correct answer to the student's question is b) Capacitance is independent of voltage; charge depends on capacitance.
Step-by-step explanation:
The capacitance of a device does not depend on the applied voltage. Rather, it is determined by the geometric and material parameters of the device, such as the area of the plates and the separation between them, as well as the dielectric constant of the material between the plates.
On the other hand, the charge stored in a capacitor is dependent on both the capacitance of the device and the voltage applied across it. The relationship between charge (Q), capacitance (C), and voltage (V) is given by the equation Q = CV, which shows that the charge stored is directly proportional to both capacitance and the voltage applied.
The capacitance of a device does not depend on the applied voltage. Capacitance is determined by the geometry of the capacitor and the materials it is made from. It is independent of the voltage across the device. On the other hand, the charge stored in the capacitor does depend on the capacitance. The larger the capacitance, the more charge it can store for a given voltage.
The correct choice for the student's question would be: b) Capacitance is independent of voltage; charge depends on capacitance.