Home
Class 12
PHYSICS
Define capacitive reactance. On what fac...

Define capacitive reactance. On what factors does it depend?

Text Solution

Verified by Experts

Capacitive reactance is the effective opposition to the flow of AC and is defined as the ratio of rms value of the voltage across the capacitor to the rms value of current through the capacitor. Capacitive reactance depends on the frequency of AC and the capacitance of the capacitor.
`X_(C)prop(1)/(f)andX_(C)prop(1)/(C)`
`X_(C)=(1)/(2pifC)`.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ALTERNATING CURRENT

    SUBHASH PUBLICATION|Exercise FIVE MARKS QUESTIONS WITH ANSWERS|12 Videos
  • ALTERNATING CURRENT

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|34 Videos
  • ALTERNATING CURRENT

    SUBHASH PUBLICATION|Exercise TWO MARKS QUESTIONS WITH ANSWERS|12 Videos
  • ANNUAL EXAM QUESTION PAPER -MARCH -2017

    SUBHASH PUBLICATION|Exercise PART -D|12 Videos

Similar Questions

Explore conceptually related problems

Define inductive reactance. On what factors does it depend?

Define self inductane of a solenoid. On what factors does it depend ?

Define mutual inductance between a pair of coil. On what factors does it depend ?

What is electron gain enthalpy? On what factors does it depend?

What is meant by electronegativity? On what factors does it depend?

A 15.0 muF capacitor is connected to a 220 V, 50 Hz source. Find the capacitive reactance and the current (rms and peak) in the circuit. If the frequency is doubled, what happens to the capacitive reactance and the current?

The resistance of a cell does not depend on :

What is loudness of sound ? What factors does it depend on ?

Define capacitance of a conductor.

How does capacitive reactance vary with frequency ?