Physics-
General
Easy
Question
When a circular coil of radius 1 m and 100 turns is rotated in a horizontal uniform magnetic field, the peak value of emf induced is 100 V. the coil is unwound and then rewound into a circular coil of radius 2 m. If it is rotated now, with the same speed, under similar conditions, the new peak value of emf developed is
- 50 V
- 25 V
- 100 V
- 200 V
The correct answer is: 200 V
Induced EMF=
Peak value =
…(i)
Here 
Now 
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