First slide

AC Circuits

Question

A constant voltage at different frequencies is applied across a capacitance C as shown in the figure. Which of the following graphs
Correctly depicts the variation of current with frequency ?

Moderate

A
B
C
D

Solution

For capacitive circuits $X_{C} = \frac{1}{ωC}$
$∴ i = \frac{V}{X_{C}} = VωC \Rightarrow i \propto ω$

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