A square loop of wire lies in the plane of the page. An increasing magnetic field directed into the page. The induced current in the loop is:
Correct answer: A. Counter clockwise
- A. Counter clockwise
- B. Clockwise
- C. Zero
- D. Up the left edge and from right to left along the top edge
Explanation
As the square loop of wire lies in the plane of the page and the increasing magnetic field is directed into the page, then according to Lenz's law, the induced current opposes the increasing magnetic flux. By right hand rule the direction of induced 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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