Question

TUTORIAL PROBLEMS1. Find the resistance of a coil of mean circumference 2 meter wound with a wire of0.05 cm in dia. The specific resistance of the wire material is 1.69 x 10-6 22-cm.​

Answer 1

Answer:

Given, Diameter=0.5mm,resistivity=1.6×10

−8

Ω−m,resistance=10Ω

we know that R=ρ

A

1

⇒1=

ρ

RA

Where A is the area of the cross-section,

=

1.6×10

−8

10×3.14×( 0.0005 )

--------------

2 =122.7m

Thus the length of the wire is 122.7m

Step-by-step explanation:

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