Chapter 31
... This moves the charges through a magnetic field and establishes a current The change in energy of the system during some time interval must be equal to the transfer of energy into the system by work The power input is equal to the rate at which energy is delivered to the resistor ...
... This moves the charges through a magnetic field and establishes a current The change in energy of the system during some time interval must be equal to the transfer of energy into the system by work The power input is equal to the rate at which energy is delivered to the resistor ...
electric potential
... of the force that would act on a small positive test charge placed in the field ...
... of the force that would act on a small positive test charge placed in the field ...
electromagnetism_8
... Generator run in reverse Current is supplied to loop and the torque acting on the current-carrying loop causes it to rotate Do mechanical work by using the rotating armature As loop rotates, changing B field induces an emf Induced emf (back emf) reduces the current in the loop – remember Lenz’s law ...
... Generator run in reverse Current is supplied to loop and the torque acting on the current-carrying loop causes it to rotate Do mechanical work by using the rotating armature As loop rotates, changing B field induces an emf Induced emf (back emf) reduces the current in the loop – remember Lenz’s law ...
Induced electric fields
... The work done on an electron by the induced electric field during a complete trip around the loop is e ε energy can be removed from the electron due to the resistance of the loop The induced electric field is a non-conservative field → path does matter in this case, not just the potential difference ...
... The work done on an electron by the induced electric field during a complete trip around the loop is e ε energy can be removed from the electron due to the resistance of the loop The induced electric field is a non-conservative field → path does matter in this case, not just the potential difference ...
Static Electricity
... – High electron mobility = conductor – Low electron mobility = insulator • In order to produce a net flow of electrons, they must increase their energy ...
... – High electron mobility = conductor – Low electron mobility = insulator • In order to produce a net flow of electrons, they must increase their energy ...
ELECTROSTATICS and ELECTRIC FIELDS
... 59. A positive charge of 10-6 coulomb is placed on an insulated solid conducting sphere. Which of the following is true? (A) The charge resides uniformly throughout the sphere. (B) The electric field inside the sphere is constant in magnitude, but not zero. (C) The electric field in the region surr ...
... 59. A positive charge of 10-6 coulomb is placed on an insulated solid conducting sphere. Which of the following is true? (A) The charge resides uniformly throughout the sphere. (B) The electric field inside the sphere is constant in magnitude, but not zero. (C) The electric field in the region surr ...
1 Review Questions REVIEW QUESTIONS Data for all Questions
... unearthed. On this third diagram show how someone touching the case will receive an electric shock when accidental contact between the live wire and the cabinet occurs. b) Another quotation from the same text reads: "The electrical shock hazards in hospitals are generally similar to those in homes a ...
... unearthed. On this third diagram show how someone touching the case will receive an electric shock when accidental contact between the live wire and the cabinet occurs. b) Another quotation from the same text reads: "The electrical shock hazards in hospitals are generally similar to those in homes a ...
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.