How can electricity make magnetic fields?, Physics

Assignment Help:

How can electricity make magnetic fields?

In 1820, Oersted discovered that an electric current can produce a magnetic field. He happened to notice a compass move when he connected a battery to a circuit. Anytime an electric charge moves, it creates an associated magnetic field.

182_How can electricity make magnetic fields 1.png

This is when we introduce the "dreaded" right-hand rule. Correctly executing this maneuver will help you determine the direction of a magnetic field associated with an electric current. Please be sure to set your pencil down and make sure you use your right hand, because even if you only mistakenly use your left hand, you will get the wrong direction! If you point the thumb of your right hand in the direction of positive current (which is opposite the direction of the electron current), the fingers of your right hand will naturally wrap in the direction of the magnetic field reaching out in circles perpendicular to the wire.

1447_How can electricity make magnetic fields 2.png

If we wrap a wire carrying current into a loop, we have the same magnetic field that would appear around an ordinary bar magnet. Another version of the dreaded right hand rule helps us identify the north pole of a solenoid which is just a stack of these loops. If you wrap the fingers of your right hand in the direction of the current in the solenoid, your thumb points in the direction of the north pole of your "electromagnet". If the current is turned off, the magnetic field disappears. If the current is turned on, the magnetic field will appear again.

221_How can electricity make magnetic fields 3.png


Related Discussions:- How can electricity make magnetic fields?

Find the separation among the second bright fringe, Q. Two slits 0.3 mm sep...

Q. Two slits 0.3 mm separately are illuminated by light of wavelength 4500 0A. The screen is placed at a distance 1m from the slits. Find the separation among the second bright fri

Electric dipole, what are the subtopics of electric dipole with detail expl...

what are the subtopics of electric dipole with detail explain

Explain fraunhoffer lines, Show the types of chromatic aberration. What do ...

Show the types of chromatic aberration. What do you understand by Fraunhoffer lines? Explain their origin.

Electrostatics – two kinds of charges, Electrostatics – Two kinds of Charge...

Electrostatics – Two kinds of Charges     Introduction: If a glass rod is rubbed with silk cloth it acquires a positive charge, while silk cloth acquires an equal amo

Process to calculate the velocity of the mass, A 10 kilogram mass rests on ...

A 10 kilogram mass rests on a horizontal frictionless surface.  A horizontal force of 5 Newtons is applied to the mass.  After the force has been applied for 1 second, the

Angular and tangential acceleration, 1. Consider the centripetal accelerati...

1. Consider the centripetal acceleration due to the earth's spin for a CWRU student sitting in Strosacker auditorium. [The radius of the earth is R = 6378.1 km, Cleveland's lati

Illustrate examples of systems in equilibrium, Examples of systems in equi...

Examples of systems in equilibrium: a) a stone resting on the ground; b) a pencil balanced on your finger; c) a ladder placed against the wall, an aircraft flying at a co

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