In a series R-C circuit the supply voltage $$V_S$$ is kept constant at 2 V and the frequency $$f$$ of the sinusoidal voltage is varied from 500 Hz to 2000 Hz. The voltage across the resistance $$R = 1000$$ ohm is measured each time as $$V_R$$. For the determination of the $$C$$ a student wants to draw a linear graph and try to get $$C$$ from the slope. Then she may draw a graph of

A

$$f^2$$ against $$V_R^2$$

B

$$\frac{1}{f^2}$$ against $$\frac{V_S^2}{V_R^2}$$

C

$$\frac{1}{f^2}$$ against $$\frac{1}{V_R^2}$$

D

$$f$$ against $$\frac{V_R}{\sqrt{V_S^2 - V_R^2}}$$