Q. 35 FIGURE EX27.35 is a current-vers... [FREE SOLUTION]

Chapter 27: Q. 35 (page 763)

FIGURE EX27.35 is a current-versus-potential-difference graph for a material. What is the material's resistance?

Short Answer

Expert verified

The material's resistance is $50 惟 .$

Step by step solution

Concept Introduction

Material resistance is defined by the thermal resistance of insulating materials is usually described by their $R -$ value, which indicates their resistance to heat flow. $R -$ values less than one indicate greater insulating effectiveness. The $R -$ value of insulation depends on its type, thickness, and density.

Explanation

The current is a linear function of potential difference in the form of

$I = a 螖 V$

Where $a$ is the slope of the graph.

From Ohm's law we know that

$I = \frac{U}{R},$

So, the slope is equal to

$a = \frac{1}{R}$

From this graph, the current grows by $1 A$

When the potential difference grows by $50 V$ so

a = \frac{1 A}{50 V}

So, we will get

$R = \frac{1}{a}$

Substitute the expression,

role="math" localid="1649067269150" $R = (\frac{1}{\frac{1 A}{50 V}})$

$R = 50 惟$

Final Answer

Hence, the material resistance is $50 惟 .$

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91影视

FIGURE EX27.35 is a current-versus-potential-difference graph for a material. What is the material's resistance?

Short Answer

Step by step solution

Concept Introduction

Explanation

Final Answer

One App. One Place for Learning.

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