electric current
举一反三
- 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
- The inductance of an electric device is independent of the electric current it carries. A: 正确 B: 错误
- 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
- Steady electric current, ______ by the Italian physicist Allessandro Volta (1745-1827), can be produced by the electric cell.
- If _____ voltage is applied across _____ circuit, _____ electric current will flow in _____ circuit.