Two different loops are concentric and lie in the same plane. The current in the Outer loop is clockwise and increasing with time. The induced current in the inner loop then, is:
Correct answer: B. Counter clockwise
- A. Zero
- B. Counter clockwise
- C. Clockwise
- D. In a direction that depends on the ratio of the loop radii
Explanation
Current will be induced in inner loop in a counter-clockwise direction. According to Lenz law induced emf always gives rise to a current whose magnetic field opposes the change in magnetic flux.
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About Electromagnetism
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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