The Biot-Savart Law is used to（ ）
A: determine the magnetic field created by an electric current
B: determine the electric field created by an electric current
C: determine the force field created by an electric current
D: determine the magnetic field created by individual point charges
E: determine the electric field created by individual point charges
A: determine the magnetic field created by an electric current
B: determine the electric field created by an electric current
C: determine the force field created by an electric current
D: determine the magnetic field created by individual point charges
E: determine the electric field created by individual point charges
举一反三
- The<br/>Biot-Savart Law is used to A: determine<br/>the electric field created by individual point charges B: determine<br/>the electric field created by an electric current C: determine<br/>the magnetic field created by individual point charges D: determine<br/>the magnetic field created by an electric current E: determine<br/>the force field created by an electric current
- Semiconductor<br/>with a current is placed in a magnetic field perpendicular to the<br/>current and it induced electric field in the direction. This<br/>phenomenon is known as the ______ .
- On the ideal conductor surface, the relationship between the electric field lines and the conductor surface is A: the electric field lines is always pertendicular to the conductor surface. B: the electric field lines is always parallel to the conductor surface. C: there is no electri field lines exsited. D: unable to determine the relationship.
- Both electric field E and electric potential V can describe the characteristics of a field. If the electric potential at a certain point is zero, the electric field at that point has to be zero.
- The curl equation [img=154x44]1803a2a153c85f5.png[/img]shows that : A: The time-varying magnetic field can generate an electric field, in which the elecric field lines is closed around the magnetic field line. B: The time-varying magnetic field can generate a magneitc field, in which the magnetic field lines is closed around the electric field line. C: The magnetic field lines is closed themselves. D: Flux continuity