A square loop of wire lies in the plane of the page. A decreasing magnetic field is directed into the page. The induced current in the loop is:
Correct answer: B. Clockwise
- A. Counterclockwise
- B. Clockwise
- C. Zero
- D. Up the left edge and from right to left along the top edge
Explanation
As the square loop or wire lies in the plane of the page and decreasibg magnetic fiel is directed into the page. According to lenz law the induce current opposes the decreasing magnetic flux. By right hand rule the direction of induce current will be 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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