A circular loop of area 200 cm2 sits in a x-z plane. Then a uniform magnetic field, B = (0.3i + 0.4j) T is applied on it, find the magnetic flux through the loop:
Correct answer: C. 0.008 wb
- A. 0.8 wb
- B. 8 wb
- C. 0.008 wb
- D. 0.08 wb
Explanation
B, that stands for the magnetic field strength= (0.3i + 0.4j) T.A vector, that stands for the area vector, comprises of the Area, in meters, and the direction;Area, in meters= 200 cm2 --> 0.02 m2The circle lies is in the x-z plane so, perpendicular to it is the x-y plane. Therefore, the area vector would be in the x-y plane thus, 'j'.Magnetic Flux = B vector x Area vector *Only the B vector, that is in the direction of the Area vector would be considered.= 0.4j x 0.02j = 0.008 Wb.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Electromagnetism
1,176 free Electromagnetism MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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.
More Electromagnetism questions
A transformer has negative voltage regulation when its load power factor is
A square loop of side 4 meters is placed in a magnetic field of 10 T and the surface of the loop is making an angle with the field of 60˚. What will be the flux?
Unit of relative permeability is
If the direction of the field and area vector is opposite then field is
If a charged particle enters in a region where electric and magnetic field are parallel to its motion, then it will:
Two α-particles have the ratio of their velocities as 3 : 2 on entering the field. If they move in different circular paths, then the ratio of the radii of their paths is: