Top Posters
Since Sunday
j
22
22
i
19
a
18
z
18
m
17
D
17
16
j
16
K
16
s
16
a
16
New Topic  
wrote...
Posts: 125
Rep: 0 0
6 years ago
1) Ampere and Weber had derived equations on the assumption that electrical charges and magnetic poles act on one another at a distance and that nothing happens in space between them

2) Michael Faraday, on the other hand, believed that electrical charges and magnets infuse all space with lines of force, which interact with the lines of force emanating from other charges and magnets to produce the electrical and magnetic forces that we experience.

Thank you
Read 228 times
1 Reply
Replies
Answer accepted by topic starter
wrote...
Posts: 4
Rep: 0 0
6 years ago
Sign in or Sign up in seconds to unlock everything.
The prvailing picture is that charges interact via an electric field - the field either originates or terminates on a charge.  Now the field does not interact with other fields in free space so the picture we have differs from Faraday, but rather the field interacts directly with the other charges.  for instance, Coulomb's law, which gives the electric force between two charges separated by some distance can be written as a charge times an electric field due to another charge.

Magnetic fields basically surround the current that gives rise to the field, hence it doesn't orginate of terminate on the current.  But like the electric field, forces are exerted by the field on other particles directly, not by modifying their fields.  Again, you can use Ampere's law to compute the force on two wires carrying current and write teh expression as the current in one wire times the magnetic field due tot he other wire.

Faraday is right in that these fields cover space but they don't interact - they need charged matter for that.  Ampere and Weber were incorrect on space being empty - their view would require what Einstein might label as "spooky action at a distance" meaning a force gets exerted without a causal mechanism.
This verified answer contains over 210 words.
1
Related Topics
New Topic      
This topic is not open for further replies. Only administrators and moderators can reply. If you'd like to contribute to this topic, start a new thread and make reference to this one. Otherwise, contact a moderator for more options.
Explore
Post your homework questions and get free online help from our incredible volunteers.
Learn More
Improve Grades
Help Others
Save Time
Accessible 24/7
  125 People Browsing
Your Opinion
In one word, how would you rate our website?
Votes: 93

Related Images
 137
 37
 23