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QAIPMT-2009-Ph-2152: NEET 2009 Physics - Class 11 AIPMT-2009-Ph-2152 Solution: A conducting circular loop is placed in a uniform magnetic…
A conducting circular loop is placed in a uniform magnetic field 0.04 T with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at 2 mm/s. The induced emf in the loop when the radius is 2 cm is
Multiple Choice Options
- A t 1 = 4t 2
- B t 1 = 2t 2
- C t 1 = t 2
- D t 1 > t 2
Step-by-Step Verified Solution
According to Kepler�s law, the areal velocity of a planet around the sun always remains constant.
SCD : A 1 � t 1 (areal velocity constant)
SAB : A 2 � t 2
A 1 t 1 = A 2 t 2
t 1 = t 2 . A 1 A 2 (given A 1 = 2A 2 )
= t 2 . 2 A 2 A 2
_ t 1 = 2 t 2