Electromagnetic Induction and Alternating Current 1 Question 5
5. A circular loop of radius lies parallel to a much bigger circular loop of radius . The centre of the smaller loop is on the axis of the bigger loop. The distance between their centres is . If a current of flows through the bigger loop, then the flux linked with smaller loop is
(2013 Main)
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 5. (a)
Solution:
- Magnetic field at the centre of smaller loop
Area of smaller loop
Substituting the values, we get,