TestUstad

Magnetic flux and flux density are related by___________________?

Correct answer: B. magnetic flux = flux density x area

  • A. magnetic flux = flux density / area
  • B. magnetic flux = flux density x area
  • C. flux density = magnetic flux area
  • D. flux density = magnetic flux x area

Explanation

Magnetic flux through an area is Φ = BA when the field is perpendicular to the area, where Φ is in Wb, B is in Wb m^-2, and A is in m^2. More generally, Φ = BA cosθ. The likely wrong choice is a, which reverses the relationship between flux and area.

Written and checked by , contributorLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Magnetic Flux

Magnetic flux measures the magnetic field passing through a surface, calculated for a uniform field as Φ = BA cos θ, where θ is the angle between the field and the surface normal. Questions involve area, field strength and orientation, the weber as its unit, and the distinction between flux and magnetic field.

Practise Electromagnetism

1,176 free Electromagnetism MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Electromagnetism testAll Electromagnetism MCQs

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Physics questions like this

Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Lecturer Physics Test Physics80 MCQsSubject Specialist Physics Test Physics80 MCQsNET Physics60 MCQsNUMS Physics40 MCQsDUHS Physics36 MCQsETEA MDCAT Physics36 MCQsKMU Physics36 MCQsMDCAT Physics36 MCQsECAT Physics30 MCQsETEA Engineering Admission Test Physics30 MCQsGIKI Physics30 MCQsNED Physics30 MCQsPIEAS Physics30 MCQsPMD Physics25 MCQsBSN Entry Test Physics20 MCQsPAF Airman Physics15 MCQs

More Magnetic Flux questions

A coil of 200 turns and area 0.01 m squared lies perpendicular to a field of 0.5 T. The flux linkage is

The magnetic flux through a coil is maximum when the plane of the coil is

Magnetic flux through a surface is defined as

If the magnetic field is parallel to a surface, then the magnetic flux through the surface is:

The magnetic flux linked with a coil is inversely proportional to the:

A rectangular loop of dimension 3 cm by 5 cm is placed perpendicular to a uniform magnetic field of 0.1 T, find the magnetic flux through the loop.