Pencil lead is actually carbon. What is the current if a 9.0 V potential difference is applied

Question:

Pencil “lead” is actually carbon. What is the current if a 9.0 V potential difference is applied between the ends of a 0.70 mm-diameter, 6.0-cm-long lead from a mechanical pencil?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Physics for Scientists and Engineers A Strategic Approach with Modern Physics

ISBN: 978-0133942651

4th edition

Authors: Randall D. Knight

See More Books

Question Posted: Nov 02, 2018 11:13 AM

See More Questions

A 2.0-m-long, 1.0-mm-diameter wire has a variable resistivity given by where x is measured from one end of the wire. What is the current if this wire is connected to the terminals of a 9.0 V battery?...
A 9.0-V battery is connected in series with a 31-mH inductor, a 180- resistor, and an open switch. (a) What is the current in the circuit 0.120 ms after the switch is closed? (b) How much energy is...
A 0.30-H inductor and a 200.0- resistor are connected in series to a 9.0-V battery. (a) What is the maximum current that flows in the circuit? (b) How long after connecting the battery does the...
International Paper reported the following items for the current year: Sales = $3,500,000; Cost of Goods Sold = $1,250,000; Depreciation Expense = $170,000; Administrative Expenses = $150,000;...
Aside from using a buffer and the indirect strategy, what other techniques can you employ that will cushion the blow of negative news?
a) Calculate Go for the following cell reaction: Cd(s) Cd2+(aq)|\Co2+(aq)|Co(s) The Gof for Cd2+(aq) is 77.6 kJ/mol. (b) From Go, calculate the standard cell potential for the cell reaction and from...
Show that, for irrotational axisymmetric flows in cylindrical coordinates, the streamfunction satisfies the following equation: \[\frac{\partial^{2} \psi}{\partial r^{2}}-\frac{1}{r}...
Is there a difference in how much males and females use aggressive behavior to improve an angry mood? For the "Anger-Out" scores, compare the means for each gender. (a) What is the 95% confidence...
Why would Qantas international (not domestic) have a underlying earnings before interest and tax (EBIT) of $-238,000,000
Prepare a research paper on one aspect of body language presented in this chapter Your paper should have a minimum of five authoritative references elements how a specific body language mannerism...
The femoral artery is the large artery that carries blood to the leg. What is the resistance of a 20-cm-long column of blood in a 1.0-cm-diameter femoral artery? The conductivity of blood is 0.63 -1...
The resistance of a very fine aluminum wire with a 10 m 10 m square cross section is 1000 . A 1000 resistor is made by wrapping this wire in a spiral around a 3.0-mm diameter glass core. How many...
The differential equation y = 2ty + e t2 , y(0) = 5, has solution y = (t + 5)e t2 . In the following table, fill in the second row with the values obtained from the use of a numerical method and the...
A homogeneous disk, having mass $M=2.50 \mathrm{~kg}$ and radius $R=15.0 \mathrm{~cm}$, can rotate, without friction, about a fixed horizontal axis, passing through the point $\mathrm{O}$ of...
The system in Fig.12.21 consists of a homogeneous disk of mass $M=300 \mathrm{~g}$ and radius $R=40.0 \mathrm{~cm}$. At the disk, a slit has been produced along the entire length $R$ of the...
Consider the system in Fig.12.17. A device with cylindrical symmetry, which rolls without crawling on a horizontal plane, has mass $M=10.0 \mathrm{~kg}$ and radius $R=8.0 \mathrm{~cm}$. The...
Show that if you have a mass $M$ distributed of on a spherical shell, that is, on a sphere of radius $R$ hollow inside, and a point mass $m$ at a distance $h$ from the sphere, the...
Using the energy scale used in the microscopic world, chemical processes release about $10 \mathrm{eV}$ per elementary reaction, while a nuclear reaction releases about $10 \mathrm{MeV}$....
Each hour, a 10 m 2 section of fabric is inspected for flaws. The numbers of flaws observed for the last 20 hours are as follows: a. Compute the upper and lower 3 limits for a c chart. b. Is the...
You are a U.S. investor who purchased British securities for 2,000 one year ago when the British pound cost U.S. $1.50. What is your total return (based on U.S. dollars) if the value of the...
Does a refrigerator prevent or delay the spoilage of food? Explain.
In the laboratory, endothermic reactions are usually preformed at elevated temperatures, whereas exothermic reactions are usually performed at lower temperatures. What are some possible reasons for...
How is it possible for a jet airplane carrying 110 tons of jet fuel to emit 340 tons of carbon dioxide?
What is the half-life in hours of procainamide in a patient whose total clearance is estimated to be 20 L/h and the volume of distribution is 120 L assuming one compartment, open model, first- order...
1. The technologies, such as ChatGPT, has been launched before introducing even a baseline of safety measures. This goes back to trade-offs that companies make, and people just watch the impact from...
The cumulative incidence of myocardial infarction is 180.0 new cases per 10,000 persons among individuals with severe hypertension. In contrast, the cumulative incidence of myocardial infarction is...

Pencil lead is actually carbon. What is the current if a 9.0 V potential difference is applied

Question:

Step by Step Answer:

Solve From Table 272 the resistivity of carbon is 35 10 5 m From Equation 2722 the res...View the full answer

Physics for Scientists and Engineers A Strategic Approach with Modern Physics

Students also viewed these Physics questions