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OpenStudy (anonymous):

What is the difference between electric field and magnetic field.

OpenStudy (anonymous):

:O

OpenStudy (anonymous):

hmmm electric field accelerates any charge.. ergo puts force on ANY charged particle (moving or not moving ).. alond the direction of the field ( either in same direction for +ve or opposite directino for -ve) on the other hand a magnetic field does NOT put ANY force on a STATIONARY charge.. only on MOVING charges!..

OpenStudy (anonymous):

mind you.. thats just one difference.. the concept is very subtle and go to a very high level !

OpenStudy (anonymous):

For example.. electric fields are conservative .. magnetic fields are not!

OpenStudy (anonymous):

and if you want to learn in detail i recommend you take the open course ELECTRICITY AND MAGNETISM by Prof Walter Lewin.. the GOd of physics :D..!!

OpenStudy (anonymous):

but if I place a conductor in varying magnetic field current is induced into it. which we generally call charge.

OpenStudy (anonymous):

as according to this can I say that magnetic field accelerates charge.

OpenStudy (anonymous):

current is not charge current is flow of charges.. (well strictly speaking flow of NET charges.. there must be a NET charge moving through any cross section .. ) for example if i move my hand.. my hand is made of charges and thus there is FLOW of charges.. but not NET charge.. ok anyways now you talking about induction.. well VARYING magnetic fields can accelerate charges as you say.. but not a UNIFORM one.. however a UNIFORM electric field can accelerate charges!

OpenStudy (anonymous):

what is the big difference between net charge and charge flow.

OpenStudy (anonymous):

if you shake your hand.. your hand is made of charges and thus there is flow of charges.. however if you consider any cross section .. and count how many +ve charges have gone by .. you ll see its exactly equal to the no. of -ve charges that have gone by.. (cause atom as whole has same no. of +ve and -ve charges) thus you see..there is flow of charges.. charges are flowing.. but is there a NET +ve charge or a NET -ve charge?! no.. there isn't hence no electric current is said to be flowing

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