A Carbon Resistor Is Made of a Cylinder of Carbon,of $\times$

question 16

Multiple Choice

A carbon resistor is made of a cylinder of carbon,of diameter 7.4 mm.If the resistivity of carbon is 3.5 $\times$ 10^-5 $\Omega$ m and when placed in a circuit a potential difference of 0.15 V exists when 12 A flows across the resistor,what is the length of the cylinder?

• A) 6.1 cm
• B) 1.5 cm
• C) 0.15 cm
• D) 0.5 cm

---

Definitions:

Suture

A stitch or a row of stitches holding together the edges of a wound or surgical incision.

Lead Away

To guide or direct someone or something away from a certain place.

Middle

The central point or part of something.

Impulses

Electrical or chemical signals transmitted through neurons that facilitate communication within the brain and between the brain and the rest of the body.