The Capacitance Per Unit Length of a Very Long Coaxial

question 19

Multiple Choice

The capacitance per unit length of a very long coaxial cable, made of two concentric cylinders, is 50 pF/m. What is the radius of the outer cylinder if the radius of the inner one is 1.0 mm? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²)

• A) 3.0 mm
• B) 2.0 mm
• C) 4.0 mm
• D) 1.0 mm
• E) 0.50 mm

---

Definitions:

Higher Profits

Describes an increase in the financial gains of a business after all expenses have been deducted.

Per Se Violation

An action deemed illegal, without the need for further evidence of its harm or anticompetitive effect, under certain laws or regulations.

Antitrust Law

Laws protecting commerce from unlawful restraints and anticompetitive practices.

Restraint On Trade

Practices or agreements that restrict free competition and trade, often scrutinized and regulated by law.