Verified Solution • 2025–26 Session moderate

QJEEM21Ph923c: JEE Main 2021 Physics - Class 12 JEEM21Ph923c Solution: A bar magnet is passing through a conducting loop of radius R…

A bar magnet is passing through a conducting loop of radius R with velocity υ. The radius of the bar magnet is such that it just passes through the loop. The induced e.m.f. in the loop can be represented by the approximate curve :

JEE Main 2021 (Online) 27th August Morning Shift Physics - Electromagnetic Induction Question 67 English

Multiple Choice Options

  • A https://ik.imagekit.io/novatra/photos/1de7e170ba6c1800d327eae3c5ce0e53640498c416affb5e0951ea4e64d530b0.webp
  • B https://ik.imagekit.io/novatra/photos/7e07712265be951347fd40a66c0c42faaf3d6c475face6a07705411e4f0065f9.webp
  • C https://ik.imagekit.io/novatra/photos/f827c71f279f9a32e76ce4bad0157a3f12cf6e6a5d238811bdf0c6107b0960f3.webp
  • D https://ik.imagekit.io/novatra/photos/39b00af744a63e781b94e3bb7e4a80d2c69a7168da8eed97439749ed2122b287.webp

Step-by-Step Verified Solution

JEE Main 2021 (Online) 27th August Morning Shift Physics - Electromagnetic Induction Question 67 English Explanation
→ When magnet passes through centre region of solenoid, no current / Emf is induced in loop.

→ While entering flux increases so negative induced emf

→ While leaving flux decreases so positive induced emf.

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