Testing E & B Fields: Is This the Only Way?

  • Thread starter Thread starter cragar
  • Start date Start date
  • Tags Tags
    Fields Testing
AI Thread Summary
To determine the presence of a magnetic (B) field, one can use a stationary test charge to observe that it remains still, and a moving test charge to see deflection, indicating the influence of the B field. If a test charge moves from rest, it confirms the existence of an electric (E) field. The traditional method of moving a conductor through an E field can generate a current temporarily until the material polarizes. This raises questions about the effectiveness of these methods in distinguishing between E and B fields. Overall, the discussion highlights the complexities of testing and identifying electric and magnetic fields.
cragar
Messages
2,546
Reaction score
3
Is the only way to tell that I have a B field, is to take a test charge and place it stationary and see that it doesn't move? And then fire a test charge and see that it gets deflected when it is moving at a speed. And if my test charge moved from rest I would know there is an E field.
Is this the only way to tell the difference between E and B fields. At least relative to me.
 
Physics news on Phys.org
The old fashioned way is to wave a conductor around and see if you generate a current.

Claude.
 
If i moved a conductor around in an E field . Wouldn't it create a small current for a little while until it polarized the material.
 

Thread 'Why can't Solar panels be hemispherical, or a curved strip type?'

comparing a flat solar panel of area 2π r² and a hemisphere of the same area, the hemispherical solar panel would only occupy the area π r² of while the flat panel would occupy an entire 2π r² of land. wouldn't the hemispherical version have the same area of panel exposed to the sun, occupy less land space and can therefore increase the number of panels one land can have fitted? this would increase the power output proportionally as well. when I searched it up I wasn't satisfied with...
View full post »

Thread 'The Physics of unloading sand from a barge'

I think it's easist first to watch a short vidio clip I find these videos very relaxing to watch .. I got to thinking is this being done in the most efficient way? The sand has to be suspended in the water to move it to the outlet ... The faster the water , the more turbulance and the sand stays suspended, so it seems to me the rule of thumb is the hose be aimed towards the outlet at all times .. Many times the workers hit the sand directly which will greatly reduce the water...
View full post »

Similar threads

Geometric transformation of E field to B ?
Replies
6
Views
1K
I Magnetic field as result of length contraction
Replies
20
Views
4K
I Charge movement relative to magnetic field frame dependence/invariance
Replies
5
Views
868
A Relativity: Test charge moving perpendicular to a current carrying wire exhibits a force
Replies
7
Views
1K
I How can concentration gradient field come into existence immediately?
Replies
1
Views
3K
B Questions about the Universe: Positive & negative fields and effects
Replies
4
Views
4K
I Confused about work done on charge
Replies
8
Views
1K
B Understanding the electric field
Replies
16
Views
1K
I Focussing on the Treadmill of Veritasium's Blackbird faster than wind
Replies
15
Views
3K
Force on a stationary test charge from a moving charge
Replies
5
Views
7K

Hot Threads

Recent Insights

Back
Top