The unit of magnetic flux density is the tesla, 'T'. It can also be expressed as:
Correct answer: D. 1 N A-1 m-1
- A. 1 N A-1 m
- B. 1 N-1 A-1 m
- C. 1 N-1 A-1 m-1
- D. 1 N A-1 m-1
Explanation
The correct answer is Option D: 1 N A-1 m-1. This is because the tesla is defined as the magnetic flux density that, when applied perpendicular to a conductor carrying a current of one ampere, results in a force of one newton per meter of the conductor. Thus, 1 T = 1 N/(A·m).Other options fail to represent this relationship. Option A lacks the correct dimensional analysis by missing the inverse meter. Option B and Option C involve inverse units that do not correspond to the derived unit for tesla.
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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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