If the Current Density in a Wire or Radius R

question 44

Multiple Choice

If the current density in a wire or radius R is given by J = kr, 0 < r < R, what is the current in the wire?

• A) 2πkR3/³
• B) 3πkR3/²
• C) kR3/³
• D) kR²
• E) kR2/²

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Definitions:

Great Cardiac Veins

The great cardiac veins are large veins on the surface of the heart that drain blood from the heart muscle.

Coronary Arteries

The arteries that supply oxygen-rich blood to the heart muscle itself, crucial for heart function.

Fibrous Pericardium

The tough outer layer of the pericardium that protects the heart and anchors it within the thorax.

Serous Pericardium

The thin, transparent layer of tissue forming the inner lining of the pericardium, which secretes serous fluid to reduce friction during heartbeats.