A small flat search coils of area 4 cm 2 with 20 closely wound turns is positioned normal…
Physics · Class 12 · CBSE — Electromagnetic Induction
A small flat search coils of area 4 cm2 with 20 closely wound turns is positioned normal to the field direction and then quickly snatched out of the field region. The total charge flowing in the coil (measured by a ballistic galvanometer connected to the coil) is 7.5 mC. The resistance of the coil and galvanometer is 0.8 W. The field strength of the magnet is
- 1.25 T
- 0.50 T
- 0.75 T
- 2.10 T
Answer
(C) 0.75 T
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