A straight copper wire is moved in a uniform magnetic field such that it cuts the magnetic lines of force. Then:
Correct answer: B. Emf will be induced
- A. Emf will not be induced
- B. Emf will be induced
- C. Sometimes emf will be induced and sometimes not
- D. Nothing can be predicted
Explanation
As the copper wire cuts the magnetic lines of force, the free charges in the wire will experience a force and will get displaced. This displacement of charges in the wire creates a potential difference and hence emf is induced.
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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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