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

Winding of inductor coils, Formers used for winding coils are ceramic or gl...

Formers used for winding coils are ceramic or glass, because they are stable. Copper wire with silver plating is used up to 50 M Hz. Lit wire produces lower RF resistance than soli

Ohm’s law, OHM’S LAW: So far you have been introduced to the concepts o...

OHM’S LAW: So far you have been introduced to the concepts of electric current (as a movement of free electrons through a conducting material), voltage (or potential) and poten

Give conditions for observation of interference pattern, Give the condition...

Give the conditions needed for production and observation of interference pattern?

Explain electricity, Electricity: The flow of electron is known as elec...

Electricity: The flow of electron is known as electricity.

Determine the terminal velocity, A 10 kg block slides down a smooth incline...

A 10 kg block slides down a smooth inclined surface as shown in Figure 1. Determine the terminal velocity of the block if the 0.1 mm gap between the block and the surface contains

Electric field, How we can calculate the magnitude of electric field above ...

How we can calculate the magnitude of electric field above a sheet charged with voltage V where we know the bulk conductivity and relative permittivity of the space above the sheet

What is a thin prism?, What is a thin prism? Write the mathematical express...

What is a thin prism? Write the mathematical expression for deviation produced by a thin prism.

Calculate the intensity along y axis, As shown in the figure below, a sourc...

As shown in the figure below, a source at S is sending out a spherical wave: E 1 =(A ×D/r) cos( wt-2πr/ λ) ; where r is the distance to source S. In addition, there is anoth

Which has additional rotational kinetic energy, Which has additional rotati...

Which has additional rotational kinetic energy an object with a rotational inertia of 4 kg·m 2 and an angular velocity of 8 rad/s or else an object with a rotational inertia of 8

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