The wires of our appliances are insulated with a material mixed with rubber, which has a very high resistivity. If a certain wire has a length of 2.5m, the outer diameter is 5mm and its inner diameter is 0.5mm, what is resistance? its Note that the inner Self-Paced Practice Problem 7.2 diameter is present to leave a hollow place where the conducting wire (usually copper) is present.

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Chapter9: Current And Resistance
Section: Chapter Questions
Problem 9.4CYU: Check Your Understanding The current density is proportional to the current and inversely...
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The wires of our appliances are
insulated with a material mixed with
rubber, which has a very high resistivity.
If a certain wire has a length of 2.5m,
the outer diameter is 5mm and its inner
diameter is 0.5mm, what is
resistance?
its
Note
that the
inner
Self-Paced lometer is presont to loove a holow
Practice
Problem 7.2
place where the conducting wire
(usually copper) is present.
A resistor with color bands blue-
red-green-yellow-gold has a
length of 5cm. If the material is
made out of carbon, how much
material (in terms of volume) is
present in this resistor? If you are
going to change the carbon to
glass, how much smaller would it
be? (Note, take the lower limit of
the final resistance and the
Self-Paced
Practice
Problem 7.3
resistivity constant of carbon
and glass)
Transcribed Image Text:The wires of our appliances are insulated with a material mixed with rubber, which has a very high resistivity. If a certain wire has a length of 2.5m, the outer diameter is 5mm and its inner diameter is 0.5mm, what is resistance? its Note that the inner Self-Paced lometer is presont to loove a holow Practice Problem 7.2 place where the conducting wire (usually copper) is present. A resistor with color bands blue- red-green-yellow-gold has a length of 5cm. If the material is made out of carbon, how much material (in terms of volume) is present in this resistor? If you are going to change the carbon to glass, how much smaller would it be? (Note, take the lower limit of the final resistance and the Self-Paced Practice Problem 7.3 resistivity constant of carbon and glass)
High-end headphones (such as the
likes of Audeze and HiFiMan) have
a such high impedance compared
to earbuds. If a neodymium driver
of a headphones have a diameter
of 40mm and a thickness (note
that this is a flat cylinder) of 2mm,
how much higher is its resistance
compared to an earbuds with a
diameter of 10mm and thickness of
Self-Paced
Practice
Problem 7.4
Imm. (p = 110 x 10-70m)
Transcribed Image Text:High-end headphones (such as the likes of Audeze and HiFiMan) have a such high impedance compared to earbuds. If a neodymium driver of a headphones have a diameter of 40mm and a thickness (note that this is a flat cylinder) of 2mm, how much higher is its resistance compared to an earbuds with a diameter of 10mm and thickness of Self-Paced Practice Problem 7.4 Imm. (p = 110 x 10-70m)
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