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Olympiad workbook

Exam: Olympiad workbook
Subject: NSEP
Chapter: Alternating Current

Olympiad workbook · NSEP · Alternating Current

In a series R-C circuit the supply voltage (V ~s) is kept constant...

In a series

R-C

circuit the supply voltage

(V \mathrm{~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 \mathrm{ohm}

is measured each time as

V_{\mathrm{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

Options

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 $\frac{V_R}{\sqrt{V_s^2-V_R^2}}$

Correct answer

D. $f$ against $\frac{V_R}{\sqrt{V_s^2-V_R^2}}$

Step-by-step solution

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