If we make the magnetic field stronger, the value of induced current is:
Correct answer: B. Increased
- A. Decreased
- B. Increased
- C. Vanished
- D. Kept constant
Explanation
Faraday's Law says that the emf induced (and therefore the current induced) in the loop is proportional to the rate of change in magnetic flux and therefore to magnetic flux.We know that magnetic flux = BAcos θWhere B is the magnetic flux density, A is the area and θ is the angle between a perpendicular vector to the area and the magnetic field.Thus, Induced emf (and therefore the induced current) is also proportional to magnetic field strength/magnetic flux density.
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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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