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Question

Physics Question on Capacitors and Capacitance

Of the following about capacitive reactance which is correct

A

the reactance of the capacitor is directly proportional to its ability to store charge

B

capacitive reactance is inversely proportional to the frequency of the current

C

capacitive reactance is mesured in farad

D

the reactance of a capacitor in an A.C. circuit is similar to the resistance of a capacitor in a D.C. circuit

Answer

capacitive reactance is inversely proportional to the frequency of the current

Explanation

Solution

XC=1ωCXC1ωX_{C} = \frac{1}{\omega C} \Rightarrow X_{C} \infty \frac{1}{\omega} for given C.