why the flux of magnetic field over a closed surface always zero?
Asked by yashrajgharte24.12dgatl
| 24th Aug, 2021,
07:23: AM
Expert Answer:
We get magnetic field induction due to parallel alignment of magnetic dipoles . Magnetic monopole does not exist.
Magnetic field lines from magnetic dipole are closed , i.e, field lines starting from dipole will end at same dipole.
Hence if we consider a closed surface that encloses magnetic dipoles, then flux is coming out at some region of surface
and flux enters towards surface in other region so that net flux through the closed surface is zero.
The concept of net flux over a closed surface is zero is expressed mathematically as follows.
( In vector analysis, integration of vector function over closed surface equals integration of divergence of vector function
over enclosed volume of the closed surface )
Hence we get the Maxwells equation 
Answered by Thiyagarajan K
| 24th Aug, 2021,
08:19: AM
Concept Videos
- derivation and expression for the magnetic induction at point dou to strith current carring condoctor
- An electron and a proton having equal momenta enter a uniform magnetic field at right angles to the field lines. What will be the ratio of the radii of curvature of their trajectories?
- State Biot Savart's law for the magnetic field produced at a point due to current element.
- How will you find the direction of the magnetic field produced due to the current element of conductor?
- Find the magnetic field produced by a long straight conductor of length L carrying current I of negligible area of cross section at a point on the conductor itself?
- When will be the magnetic field produced at a point due to current element maximum and minimum?
- Find the magnetic field induction at a point on the axis of a circular coil carrying current.
- Find the magnetic field produced if the point lies at the centre of circular coil carrying current?
- What happens to the magnetic field of the coil on its axis at a point very very far away from its centre, if the radius of the coil is doubled keeping the current flowing through it unchanged?
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change