At One Instant an Electron Is Moving in the Positive

question 53

Multiple Choice

At one instant an electron is moving in the positive x direction along the x axis in a region where there is a uniform magnetic field in the positive z direction.When viewed from a point on the positive z axis, it subsequent motion is:

• A)straight ahead
• B)counterclockwise around a circle in the xy plane
• C)clockwise around a circle in the xy plane
• D)in the positive z direction
• E)in the negative z direction

---

Definitions:

Sandstone

A sedimentary rock consisting of sand-sized minerals or rock grains, compacted and often cemented together over time.

Limestone

A sedimentary rock composed primarily of calcium carbonate, often formed from marine organisms' shells and skeletons.

Granite

A rough-textured igneous rock that predominantly contains quartz, feldspar, and mica, frequently used in the construction industry.

Lineation

A linear feature within rock, such as grain elongation or mineral stretching, that indicates flow or movement directions during formation.