Question
Of the following about capacitive reactance which is correct?

Answer

  1. Capacitive reactance is inversely proportional to the frequency of the current
Explanation:
Capacitative reactance is an opposition to the change of voltage across an element.
It is denoted by XC​ and is inversely proportional to the signal frequency (f) and the capacitance C
$\text{X}_\text{c}=\frac{1}{2\pi\text{fc}}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

If two wires having resistance R and 2R. Both joined in series and in parallel then ratio of heat generated in this situation, applying the same voltage, (a) 2 : 1    (b) 1 : 2(c) 2 : 9     (d) 9 : 2
       
Which of the following is the correct statement regarding electrochemical cell?
In electrolysis, if the duration of the passage of current is doubled, the mass liberated i(a) Doubled(b) Halved(c) Increased four times(d) Remains the same
       
A person wears glasses of power – 2.0 D. The defect of the eye and the far point of the person without the glasses will be(a) Nearsighted, 50 cm(b) Farsighted, 50 cm(c) Nearsighted, 250 cm(d) Astigmatism, 50 cm
       
Sound waves in air cannot be polarized because:
In hydrogen atom, electron makes transition from $n=4$ to $n=1$ level. Recoil momentum of the $H$ atom will be
The output of a step-down transformer is measured to be $24V$ when connected to a $12$ watt light bulb. The value of the peak current is:
Two circuits have coefficient of mutual induction of 0.09 henry. Average e.m.f. induced in the secondary by a change of current from 0 to 20 ampere in 0.006 second in the primary will be(a) 120 V(b) 80 V(c) 200 V (d) 300 V
       
The wave theory of light was given by(a) Maxwell(b) Planck(c) Huygen(d)  Young
       
In the absence of other conductors, the surface charge density(a) Is proportional to the charge on the conductor and its surface area(b) Inversely proportional to the charge and directly proportional to the surface area(c) Directly proportional to the charge and inversely proportional to the surface area(d) Inversely proportional to the charge and the surface area