What rule describes the direction of current flow (+ to -) when lines of magnetic force surround a conductor?

Related MCQs

• What rule describes the direction of current flow (+ to -) when lines of magnetic force surround a conductor?
• How is the magnetic field strength at the surface of a magnetic conductor having permeability, µ, related to the magnetic field strength, F, at the surface of a nonmagnetic conductor carrying the same current?
• How is the magnetic field strength, F, just outside a magnetic conductor having permeability, µ, related to that just outside a nonmagnetic conductor of the same size, carrying the same current?
• Which of the following is false concerning a magnetic field in and around a hollow conductor as compared to that of a solid conductor of the same outside diameter when both are of the same magnetic material, and when the applied current is the same?
• Compared to the magnetic field strength at the outer surface, the magnetic field strength, at the centre of a hollow, nonmagnetic conductor carrying DC current is:
• For direct contact magnetising methods, the magnetic field is oriented in what direction relative to the current direction?
• For direct contact magnetising methods, the magnetic field is oriented in what direction relative to the current direction?
• Applying the theory of the ‘Right Hand Rule’, a longitudinal surface defect in a round bar is detected by ‘current passing in a direction parallel to the direction of expected defects’ because:
• In which magnetizing method is the current passed directly through the part, thereby setting up a magnetic field at right angles to the current flow?
• Flux density is a measure of the number of magnetic flux lines perpendicular to an area of cross-section. If a discontinuity is in the plane of the unit area, the strongest magnetic article indication will be formed when the discontinuity is: