Q. If the capacity of a condenser is 1 F, then its resistance in a DC circuit will be
A) Zero
B) infinity
C) $1\ \Omega$
D) $\frac{1}{2}\ \Omega$
Explanation
(b) Capacitive reactance($\ X_{C})$ is given by
$X_{C} = \frac{1}{\omega C}$
Where $\omega$ is angular frequency and C the capacitance.
Also, $\omega = 2\pi f,$where$\ f$ is frequency.
In a DC circuit $f = 0\ \therefore\omega = 0$
$X_{C} = \frac{1}{0} = \infty$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.