A Magnetic Compass Is Placed near an Insulated Copper Wire

question 30

Multiple Choice

A magnetic compass is placed near an insulated copper wire. When the wire is connected to a battery, the compass needle changes position.Which of the following is the bestexplanation for the movement of the needle?

• A)The copper wire magnetizes the needle to create a force.
• B)The needle magnetizes the copper wire to create a force.
• C)The current in the wire produces a magnetic field and exerts a force on the needle.
• D)The insulation on the wire becomes energized and exerts a force on the needle.

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Definitions:

GL-5

A classification of gear lubricants, indicating the oil is suitable for high-pressure conditions and hypoid gears, common in automotive differentials.

TranSynd

A synthetic heavy-duty automatic transmission oil recommended by Allison, which states that it extends oil change intervals by 300 percent.

CD-50

A classification of heavy-duty gear oil, with "CD-50" indicating the oil's viscosity and performance characteristics according to specific standards.

Pinion Bearing Preload

The amount of force applied to pinion bearings, controlling how tightly they fit, influencing gear meshing and noise.