+91-8076753736 [email protected]

-->

Alternating Current

Question

Wired Faculty App

For an RLC circuit driven with a voltage of amplitude v_m and frequency $ω_{0} = \frac{1}{\sqrt{L C}}$ the current exhibits resonance. The quality factor, Q is given by:

$\frac{C R}{ω_{0}}$

$\frac{ω_{0} L}{R}$

$\frac{ω_{0} R}{L}$

$\frac{R}{(ω_{0} C)}$

Solution

B.

$\frac{ω_{0} L}{R}$

Quality factor,

$\frac{ω_{0}}{2 ∆ ω} = \frac{ω_{0} L}{R}$

Some More Questions From Alternating Current Chapter

A current I flows along the length of an infinitely long, straight, thin walled pipe. Then

The phase difference between the alternating current and emf is π/2. Which of the following cannot be the constituent of the circuit?

Alternating current can not be measured by D.C. ammeter because

In an LCR series a.c. circuit, the voltage across each of the components, L, C and R is 50 V. The voltage across the LC combination will be

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation