Current I is flowing in a long conducting wire, the megnetic induction at a distance r from it is 0.4 tesla, then its value at double the distance will be
Correct answer: C. 0.2 tesla
- A. 1.6 tesla
- B. 0.8 tesla
- C. 0.2 tesla
- D. 0.1 tesla
Explanation
So, when distance becomes double "B" will reduce to half.
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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