If magnetic field is doubled then magnetic energy density becomes
Correct answer: A. four times
- A. four times
- B. two times
- C. three times
- D. six times
Explanation
Option A is correct since magnetic energy density is proportional to the square of the magnetic field as shown in the image : Therefore, when the magnetic field is doubled the energy density becomes four times. Option B is incorrect since it shows that magnetic field and energy density are directly proportional, which is not the case Option C is incorrect since it gives the wrong answer Option D is incorrect since it gives the wrong answer.
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About Magnetic Flux Density
Magnetic flux density measures the magnetic force acting on a current carrying conductor or moving charge in a magnetic field. Work includes the relations B equals F divided by IL and F equals qvB, the tesla as its SI unit, field direction and the distinction between flux density and magnetic flux.
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