A series LCR circuit is connected to an alternating source of emf E. The current amplitude at reasonant frequency is . If the value of resistance R becomes twice of its initial value then amplitude of current at resonance will be [2025]

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

More

Solution

Q.
A series LCR circuit is connected to an alternating source of emf E. The current amplitude at resonant frequency is $I_{0}$ . If the value of resistance R becomes twice of its initial value then amplitude of current at resonance will be [2025]

1 $I_{0}$

2 $\frac{I_{0}}{2}$

3 $\frac{I_{0}}{\sqrt{2}}$

4 $2 I_{0}$

Ans.
(2)

At resonance Z = R

Initially, $I_{0} = \frac{E}{R}$

Finally, $I' = \frac{E}{2 R} = \frac{I_{0}}{2}$

Want Us to Email you About Special Offers & Updates?