
the magnetic field the electric field
... If it is infinitely wide: The outer magnetic field is equal to zero, instead the interior one is uniform and parallel. If it is normal: The interior magnetic field is particularly intense,instead the outer one is weak. In the middle the lines are parallel and equidistant,that’s why the magnetic fiel ...
... If it is infinitely wide: The outer magnetic field is equal to zero, instead the interior one is uniform and parallel. If it is normal: The interior magnetic field is particularly intense,instead the outer one is weak. In the middle the lines are parallel and equidistant,that’s why the magnetic fiel ...
Electric Potential and E-Fields PhET hypothesis lab
... charge, the+/- 1 nC point charge in the examples above. The electric potential expresses the work a source charge distribution does on a point charge as the point charge’s position changes. The electric field expresses the force a source distribution exerts on a point charge and work done is proport ...
... charge, the+/- 1 nC point charge in the examples above. The electric potential expresses the work a source charge distribution does on a point charge as the point charge’s position changes. The electric field expresses the force a source distribution exerts on a point charge and work done is proport ...
The Electric Field An electric field exists at a point if a test charge at
... Electric Field – Continuous Charge Distribution The distances between charges in a group of charges may be much smaller than the distance between the group and a point of interest. In this situation, the system of charges can be modeled as continuous. The system of closely spaced charges is equival ...
... Electric Field – Continuous Charge Distribution The distances between charges in a group of charges may be much smaller than the distance between the group and a point of interest. In this situation, the system of charges can be modeled as continuous. The system of closely spaced charges is equival ...
Static Electricity StudyGuide - Ms. Gamm
... between the two charges? 3. Two identical charges (+q and +q) are separated by a distance d. The charges are doubled to +2q and +2q. a. Is the electric force between the charges attractive or repulsive? b. Does the electric force between the charges increase, decrease, or stay the same when the char ...
... between the two charges? 3. Two identical charges (+q and +q) are separated by a distance d. The charges are doubled to +2q and +2q. a. Is the electric force between the charges attractive or repulsive? b. Does the electric force between the charges increase, decrease, or stay the same when the char ...
History of electromagnetic theory

For a chronological guide to this subject, see Timeline of electromagnetic theory.The history of electromagnetic theory begins with ancient measures to deal with atmospheric electricity, in particular lightning. People then had little understanding of electricity, and were unable to scientifically explain the phenomena. In the 19th century there was a unification of the history of electric theory with the history of magnetic theory. It became clear that electricity should be treated jointly with magnetism, because wherever electricity is in motion, magnetism is also present. Magnetism was not fully explained until the idea of magnetic induction was developed. Electricity was not fully explained until the idea of electric charge was developed.