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

Draw a graph showing the variation of potential energy, Draw a graph showin...

Draw a graph showing the variation of potential energy of a p of nucleons as a function of their separation. Show the regions in which nuclear force is (i) attractive, and (ii) rep

Evalaute the final temperature, Helium gas with a volume of 2.60 L, under a...

Helium gas with a volume of 2.60 L, under a pressure of 1.30atm and at a temperature of 41.0 degrees, is warmed until both pressure and volume are doubled. a)What is the final temp

Mechanics, what is reduce mass in two mass system?

what is reduce mass in two mass system?

What is value of amplification factor for valve, A triode valve which is ac...

A triode valve which is acting as an amplifier gives a voltage gain of 30. If anode resistance is 20 K ? for valve and load resistance is 60 K ?, what is value of amplification fac

Where is the magnetic field strongest in bar magnet, Where is the magnetic ...

Where is the magnetic field because of a bar magnet strongest? Answer: This is just an experimental reality.

Work and energy, if 2.13*106J of work must be done on a roller_coaster car ...

if 2.13*106J of work must be done on a roller_coaster car to move it 3.00*102m,how large is the net force acting on the car ?

What is the luminous flux of a flashlight, What is the luminous flux of a f...

What is the luminous flux of a flashlight that provides an luminance of 145 lx to the surface of water when held 0.50 m above the water?

Optics, type of mirror used

type of mirror used

Baryon decay, baryon decay The idea, predicted through several grand-...

baryon decay The idea, predicted through several grand-unified theories, that class of subatomic elements called baryons (of which the nucleons protons & neutrons are members

Show phenomenon of the formation of the newtons rings, The phenomenon of th...

The phenomenon of the formation of the Newton's rings can be explained on the basis of wave theory of light. When a light ray iP1 from an extended monochromatic light source S is a

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