Free Printable Resistivity

Worksheets

Resistivity

Total questions: 10

Worksheet time: 2mins

Name

Class

Date

Which factor does not affect resistivity?

Length

Mass

Cross-sectional area

Temperature

The unit of resistivity is

Ω/m

Ω/m²

Ω.m

Ω.m²

The nichrome wire has a cross-sectional area of 1.3 × 10^–7m² . Resistivity of nichrome = 1.1 × 10^–6Ωm and a resistance of 53Ω. The length of the wire is

0.63m

63m

0.0063m

6.3m

A copper wire of length 2.5 m and cross-sectional area 2.4 × 10^-7 m² has a resistivity of 1.7x10^-8Ωm. What is the resistance of the wire?

1.6x10^-15Ω

1.0x10^-14Ω

0.18Ω

5.6Ω

Resistance of a material would be equal to resistivity when

l = T

A = l

A = T

l = R

A cylindrical conductor of length l, diameter D, and resistivity ρ has a resistance R. What is the resistance of another cylindrical conductor of length l, diameter D/2 , and resistivity ρ?

The equation for a material with circular cross sectional area is A=

$\frac{\pi d^2}{4}$

$\pi r$

$\frac{\pi d^2}{2}$

$\pi r^3$

A wire of uniform diameter 0.28mm and a length of 1.50m has a resistance of 45Ω. It's resistivity is

2.2 x 10^-8Ωm

36 Ωm

1.8 x 10^-6Ωm

3.4 x 10^-7Ωm

Resistance is proportional to

$\frac{1}{\rho}$

$\frac{1}{l}$

10.

Resistivity

changes with conditions

relies on dimensions of the material

inversely proportional to resistance

a property of the material

Reset

Resistivity

Total questions: 10

Worksheet time: 2mins

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