Electromagnetism, Physics

Assignment Help:

Electromagnetism:

222_Electromagnetism.png

If a straight wire carrying a current is formed into a circular loop, the magnetic field is as shown. The field may be deduced by taking elements of the loop and looking at the field around each part of the loop. 

PRODUCTION OF A BAR MAGNET

If a length of wire is bent into a series of loops, it forms a solenoid. The direction of the magnetic field around any small part of it can be obtained by using the corkscrew rule. If the fields for a series of such loops are combined, the result will be a field pattern similar to that of a bar magnet.
1998_Electromagnetism1.png

END RULE

2431_Electromagnetism2.png

The direction of the magnetic field depends upon the direction of conventional current flow. We can find out which end of the coil is acting as the north pole and which is the south pole by observing the direction of current flow at each end. This is called the End Rule or sometimes, the clock rule, see diagram below.

RIGHT HAND GRIPPING RULE

The right hand gripping rule can also be used to determine the north pole of a coil. The coil is gripped by the right hand with the fingers pointing along the conductors in the direction of conventional current flow, when the thumb is then extended, it indicates the end of the coil that has a magnetic north polarity.



Related Discussions:- Electromagnetism

Types of superconductors, Type 1 and type 2 superconductors: For one gro...

Type 1 and type 2 superconductors: For one group of SUPERCONDUCTOR in which below H c is in the Meissner state, where it excludes all the magnetic flux from the interior of the

Band theory.., differentiate between direct and indirect band gaps

differentiate between direct and indirect band gaps

Fluid density and viscosity, The drag on a 30-ft long, vertical, 1.25-ft di...

The drag on a 30-ft long, vertical, 1.25-ft diameter pole subjected to a 30 mph air wind is to be determined with a model study. It is expected that the drag is a function of the p

Advantages of fibre optics, Advantages of fibre optics: Fibre-optic com...

Advantages of fibre optics: Fibre-optic communications systems have a large bandwidth, e.g. 1 GHz.  The bandwidth is the maximum rate at which information can be transmitted.

Distinguish between interference and diffraction fringes, Q. Distinguish be...

Q. Distinguish between interference and diffraction fringes? Interference Diffraction 1) It is because of the superposition of secon

Define normal force (fnorm), What is Normal Force?? Force exerted upon...

What is Normal Force?? Force exerted upon an object that is in get in touch with another stable object. If a book is resting upon a surface, then the surface is exerting an up

Spring force, just after cutting of spring will extension becomes zero or n...

just after cutting of spring will extension becomes zero or not

Calculate the pressure and temperature, A box is divided into two parts of ...

A box is divided into two parts of equal volume via a partition. The box is thermally insulated from the surroundings.  Consider that compartment 1 contains an ideal gas A at P 0 ,

What is the mass of the steel bar, 99 ml of H 2 O is initially at room tem...

99 ml of H 2 O is initially at room temperature (20.0 o C). A chilled steel rod at 2.0 o C is placed in the water. If the final temperature of the system is 18.7 o C, what is th

Half-life simulation, Aim : To obtain the half-life of two radioisotopes by...

Aim : To obtain the half-life of two radioisotopes by graphical means, using data from a simulated experiment. Theory :  Half-life( t ½ ) is the time it takes any particular ma

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd