A force which is experienced in a magnetic field depends on:
Correct answer: D. all of these
- A. magnitude of charge q
- B. speed of the moving charge v
- C. magnitude of magnetic field B
- D. all of these
- E. none of these
Explanation
The force experienced by a charge moving in a magnetic field is given by the formula F = qvB sin(θ), where q is the charge, v is the velocity of the charge, and B is the magnetic field strength. The angle θ is the angle between the velocity vector and the magnetic field lines. Therefore, the force depends on the magnitude of the charge, the speed of the moving charge, and the strength of the magnetic field. Option D correctly identifies all these factors. Options A, B, and C each identify only one of these factors, which is insufficient on its own. Option E is incorrect as it suggests that the force depends on none of these factors, which is contrary to the established formula.
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About Electromagnetic Induction
Changing magnetic flux induces an emf according to Faraday's law, while Lenz's law gives the direction that opposes the change producing it. Transformers apply induction between coils to step alternating voltage up or down, with turns ratio, current transformation and energy losses determining practical operation.
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