??? Answer is D???? Thanks for any help.
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Magnetic field Q watch
- Thread Starter
Last edited by Meessh123; 21-01-2015 at 22:16.
- 21-01-2015 22:07
- 22-01-2015 07:53
Divide that force by the number of electrons in the wire.
The number in the wire is found from multiplying the number given per unit volume by the volume of the wire.
Volume of wire is length x cross section
Do the maths and you will get the required answer.
There is another, slightly quicker, way of doing this as others may suggest.
Force per electron = BIL / nAL
Last edited by Stonebridge; 22-01-2015 at 07:59.