Qualification > Sciences
ALL PHYSICS DOUBTS - POST HERE !!
holtadit:
So if the magnet is pushed into the coil the emf flows in the pink arrow's direction ?
And if the magnet is pulled out of the coil the emf flows in the red arrows's direction ?
The Golden Girl =D:
yup
The Golden Girl =D:
--- Quote from: Ari Ben Canaan on April 03, 2010, 02:40:54 pm ---So if the magnet is pushed into the coil the emf flows in the pink arrow's direction ?
And if the magnet is pulled out of the coil the emf flows in the red arrows's direction ?
--- End quote ---
use the right hand rule of a wire and u'll get the whole thing , don't worry it's easy
holtadit:
In diagram 1 its just a normal circuit with a 12v supply and a voltmeter connected accross a normal wire. NO components.
In diagram 2 its another circuit with an OPEN switch, voltmeter and 12V supply. NO COMPONENTS.
First question: in Diagram one would the P.D. across the wire be 0 V ? Because there should be no change in the PE of the individual charges
SECOND QUESTION: In diagram 2 would the P.D. across the OPEN switch be 12 V ?
nid404:
Diagrams correct....but voltage jst the opp
In the first one, P.D across the wire would be 12V, since resistance of the wire is negligible and there is no other component....
Whenever you see a switch open, remember, no current flows, and hence, there is no P.D
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