A long straight wire is in the plane of a rectangular conducting loop. The straight wire carries a constant current 'I upwards '. While the wire is being moved toward the rectangle the current in the rectangle is:
Correct answer: C. Counter clockwise
- A. Zero
- B. Clockwise
- C. Counter clockwise
- D. Clockwise in the left side and counterclockwise in the right side
Explanation
As the constant current carrying wire is moving towards the rectangular loop, it causes an increased magnetic flux in the loop. According to Lenz' law the induce current opposes the increasing magnetic flux. By right hand rule the direction of induce current will be anti clockwise (counter clockwise)
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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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