The Sketch Shows a Circular Coil in the Xz Plane

question 18

Multiple Choice

The sketch shows a circular coil in the xz plane carrying a current I. The direction of the magnetic field at point O is

• A) +x.
• B) -x.
• C) +y.
• D) -y.
• E) -z.

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Definitions:

Cell Theory

A fundamental principle in biology stating that all living organisms are composed of cells, which are the basic unit of life, and that all cells come from pre-existing cells.

Matthias Schleiden

A German botanist and co-founder of cell theory, who in 1838 proposed that all plant tissues are composed of cells and that plant growth results from the production and expansion of these cells.

Anton Van Leeuwenhoek

A Dutch scientist known as the "Father of Microbiology" for his pioneering work in the development of the microscope and the discovery of microbial life.

Theodor Schwann

A German physiologist who co-founded the cell theory, stating that all living things are made up of cells.