Start free

Physics · Alternating Current

JEE Main 2025 — 22 January, Evening Shift — Question 50

A series LCR circuit is connected to an alternating source of emf E .

The current amplitude at resonant frequency is I0I_{0}. If the value of

resistance RR becomes twice of its initial value then amplitude of current

at resonance will be

  1. Option A:

    I0\mathrm{I}_{0}

  2. Option B:

    I02\frac{I_{0}}{2}

    Correct
  3. Option C:

    I02\frac{I_{0}}{\sqrt{2}}

  4. Option D:

    2I02 \mathrm{I}_{0}

Answer: B

Step-by-step solution

Conceptual

Answer key and solution verified before publishing.

Practise Alternating Current

Start with this question, then two more from the same chapter — with a tutor that explains every step. Free.

Solve a similar one free
Exam
JEE Main 2025
Paper
22 January, Evening Shift
Subject
Physics
Chapter
Alternating Current
Topic
Series LCR Circuit and Power Factor
A series LCR circuit is connected to an alternating source of emf E .… | JEE Main 2025 PYQ with Solution · DhiX AI