Verified Solution • 2025–26 Session moderate

QNEET-2019-Ph-817: NEET 2019 Physics - Class 12 NEET-2019-Ph-817 Solution: A 800 turn coil of effective area \(0.05\ {m}^2\) is kept…

A 800 turn coil of effective area 0.05 m20.05\ \text{m}^2 is kept perpendicular to a magnetic filed 5×10−5 T5 \times 10^{-5}\ \text{T}. When the plane of the coil is rotated by 90∘90^\circ around any of its coplanar axis in 0.1 s the emf induced in the coil will be: 0.2 V 0.02 V 2 V 2×10−3 V2 \times 10^{-3}\ \text{V}

Multiple Choice Options

  • A 0.2 V
  • B 0.02 V
  • C 2 V
  • D 2 ×\times _ 10 -3 V

Step-by-Step Verified Solution

Given N = 800, A = 0.05 m 2 , B = 5 _ 10 �5 T _ t = 0.15 s We know, e = _ ( _ f _ _ i ) _ t = _ ( 0 _ N B A ) _ t = 800 _ 5 _ 10 _ 5 _ 5 _ 10 _ 2 0.1 = 0.02 V

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