Magnetic flux linked with area of loop one is Bπr2.
So, emf in loop one is, −dtdBπr2 .
Magnetic flux linked with area of loop two is zero.
So, emf in loop two is equal to zero.
NEET UG 2016 — Physics Electromagnetism
2016mcqeasy
A uniform magnetic field is restricted within a region of radius, r. The magnetic field changes with time at a rate, dtdB. Loop one of radius R>r encloses the region, r and loop two of radius, R is outside the region of magnetic field as shown in the figure below. Then the emf generated is
Official previous-year question
Held on 30 Apr 2016 · Verified 9 Jul 2026.
Options
- A
0 in loop one and zero in loop two.
- B
−dtdBπr2 in loop one and −dtdBπr2 in loop two.
- C
−dtdBπr2 in loop one and infinite in loop two.
- D
−dtdBπr2 in loop one and zero in loop two.
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