# Search results

1. ### Work done by a magnetic field

Go through this thread if u still havent found it. Dont know its conclusion..but just sharing. https://www.physicsforums.com/threads/magnetic-fields-do-no-work-how-come.347539/
2. ### Work done by a magnetic field

From what i know, A field (which is actually force itself presented in a two-step process) does no work only if the displacement produced by that force is in a direction perpendicular to force. i.e., W = |F||d|cosΘ If Θ =90°, w=0 Here. the displacement created by the electromagnets is in the...
3. ### Question regarding waves

Yes. I was indeed considering a wave related to E field. Scalar potential(electric) 'V'. If you are actually removing imaginary portion, you will be neglecting some information in that wave. Which and why?
4. ### Question regarding waves

So this is what I understood based on your reply and my knowledge. Please correct me if I'm wrong. 1. Any wave is treated as a vector(may be becoz wave is energy propagated in a particular direction; magnitude is present; obeys vector law of addition) 2. A plane wave propogates in a plane whose...
5. ### Question regarding waves

I have two questions which has been troubling me: 1. How can we say that meaning of e^(jkR) is a spherical wave travelling in negative R direction. It can be viewed as polar form of vector with magnitude 1, but how a spherical wave? 2. When we take instantaneous value of a complex quantity ...
6. ### Field concept

Thank you guys. Isnt work = force * distance? By field value did you mean force? Thanks for giving insights into field concept. Thanks a lot. You have actually cleared my doubt on this particular issue. But in normal cases charges wont exist alone....there will be a group of them no? So an...
7. ### Field concept

Homework Statement Hello. Im having trouble understanding this particular statement found in one of my textbooks. " Work done to move a charge along a line perpendicular to the field is zero" The Attempt at a Solution Field is a space around a charge where if we place any other charge, will...