New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Alternating Current question

2004 · Shift 0 · Q152

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Main
Physics
Alternating Current
2004 · Shift 0 · Q152

Alternating Current question

2004 · Shift 0 · Q152

JEE MainPhysicsAlternating CurrentMCQ+4 / −1

In a

LCR

circuit capacitance is changed from

C

to

2C

. For the resonant frequency to remain unchaged, the inductance should be changed from

L

to

A
$L/2$
B
$2L$
C
$4L$
D
$L/4$

More from Alternating Current

In an oscillating $L C$ circuit the maximum charge on the capacitor is $Q$ . The charge on the capacitor when the energy is stored equally between the electric and magnetic field is2003 · MCQ
The core of any transformer is laminated so as to2003 · MCQ
The power factor of $A C$ circuit having resistance $(R)$ and inductance $(L)$ connected in series and an angular velocity $ω$ is2002 · MCQ
In a transformer, number of turns in the primary coil are $140$ and that in the secondary coil are $280.$ If current in primary coil is $4 A,$ then that in the secondary coil is2002 · MCQ
An electric bulb rated as $100 W - 220 V$ is connected to an ac source of rms voltage 220 V. The peak value of current through the bulb is :2025 · MCQ
An alternating current is represented by the equation, $i = 1002 sin (100 π t)$ ampere. The RMS value of current and the frequency of the given alternating current are2025 · MCQ
An inductor of self inductance 1 H is connected in series with a resistor of $100 π$ ohm and an ac supply of $100 π$ volt, 50 Hz . Maximum current flowing in the circuit is A.2025 · Numerical
An ac current is represented as $i = 52 + 10 cos (650 π t + \frac{π}{6}) A m p$ The r.m.s value of the current is2025 · MCQ