Isogonic lines are lines on a chart indicating （）.
A: points of equal variation
B: points of zero variation
C: the magnetic latitude
D: magnetic di
A: points of equal variation
B: points of zero variation
C: the magnetic latitude
D: magnetic di
举一反三
- Isogonic lines are lines on a chart indicating ______.
- If magnetic compass is not affected by any magnetic field other than the Earth’s, which statement is TRUE ___. A: Compass error and variation are equal B: Compass north will be true north C: Variation will equal deviation D: There will be no compass erro
- 词汇与结构We have to adjust heading to follow the course due to the existence of ________. A: magnetic north B: magnetic influence C: magnetic variation D: magnetic difference
- The<br/>magnetic field lines are used to visually describe the distribution<br/>of the magnetic field around the magnet. For the following<br/>statement,( <br/>) is wrong. A: Each<br/>magnetic field line is a closed loop curve B: No<br/>two magnetic field lines can cross each other C: The<br/>length of the magnetic field line reflects the strength of the<br/>magnetic field D: The<br/>tangential direction of any point on any of the magnetic lines is the<br/>direction of the magnetic field at that point
- 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