A small but measurable current of 1.2 x 10-10 A exists in a copper wire whose diameter

Question:

A small but measurable current of 1.2 x 10-10 A exists in a copper wire whose diameter is 2.5 mm. The number of charge carriers per unit volume is 8.49 x 1028 m-3.Assuming the current is uniform, calculate the

(a) Current density and

(b) Electron drifts speed.

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

Step by Step Answer:

Related Book For book-img-for-question

Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

See More Books

Question Posted: Jan 19, 2011 05:07 AM

See More Questions

A copper wire joins an aluminum wire whose diameter is twice that of the copper. The same current flows in both wires. The density of conduction electrons in copper is 1.1x10 29 m -3 ; in aluminum,...
A copper wire of diameter 2 mm is 10 m long and stretched out between two posts. The normal stress (pressure) = E (L Lo)/Lo, depends on the length L versus the unstretched length Lo and Youngs...
A copper wire of diameter 2 mm is 10 m long and stretched out between two posts. The normal stress (pressure) = E(L Lo)/Lo , depends on the length L versus the unstretched length Lo and Youngs...
Consider the Cobb-Douglas production function with X=l 1 l 2 where +l 1 , where d>0. (a) Denoting the input prices by w 1 and w 2 , derive the cost function as it depends on x and e. Show that it...
Why do nations need policies to adjust balanceofpayments disequilibria? Which are the most important objectives of nations?
The following information is available for Robstown Corporation for 20Y8: Instructions 1. Prepare the 20Y8 statement of cost of goods manufactured. 2. Prepare the 20Y8 income statement. Inventories...
It is mentioned that for a "decision to be made" there must be more than one alternative under consideration and the possible outcomes must be of unequal value. What are the three general types of...
Two projects have an identical net present value of $9,000. Are both projects equal in desirability?
Suppose an organization wishes to boost their ESG ratings and to go above and beyond in their environment, social, and governance ratings. What objective are they trying to achieve? Explain.
Which life cycle model would you follow for developing software for each of the following applications? Mention the reasons behind your choice of a particular life cycle model. Clearly Justify your...
A charged belt, 50 cm wide, travels at 30 m/s between a source of charge and a sphere. The belt carries charge into the sphere at a rate corresponding to 100A. Compute the surface charge density on...
A fuse in an electric circuit is a wire that is designed to melt, and thereby open the circuit, if the current exceeds a predetermined value. Suppose that the material to be used in a fuse melts when...
The chapter discusses how advertising agencies are sometimes fired even though they create award-winning ads and campaigns for their clients. Evaluate the decision by companies such as AB InBev to...
calculate the following question from the data given below Regression Statistics R (correlations) R Square Adj. R Square Observations Intercept S&P 500 0.4327 0.2138 0.2053 120 Coefficients p-value...
The bars system shown in Figure below consists of two steel bars and one aluminum bar. The bars are fixed to the wall at nodes 1 and 4, and are connected to each other at nodes 2 and 3. An axial...
a) Calculate the Inverse Laplace Transform of the 2s L- (52+35+2) s+35+2 b) Determine the overall transfer functions (show calculation step) of the following block diagrams. 5K 19 13K 3 s+1 6 s+1 8...
In a Modigliani-Miller world, Publicvehicle Inc. is an automobile company that is completely equity financed. The company value next year will be 75m (p=0.2), 90m (p=0.5) or 100m (p=0.3). [Note that...
Crank AB is rotating with an angular velocity of 2x.y rad/s counterclockwise and an angular acceleration of 800 rad/s clockwise at the instant shown. i) Calculate the angular velocity of bar BD....
Initially, a good sells in a competitive market at a single price, but a local government then restricts the quantity of the good that its citizens can buy. What happens to the equilibrium price of...
Government is advised to tax goods whose demand curves are inelastic if the goal is to raise tax revenues. If the goal is to discourage consumption, then it ought to tax goods whose demand curves are...
Please diagram a Skinner box example of: a. Deprivation b. Satiation
Two friends are carrying a 200-kg crate up a flight of stairs. The crate is 1.25 m long and 0.500 m high, and its center of gravity is at its center. The stairs make a 45.0° angle with respect to...
Forearm In the human arm, the forearm and hand pivot about the elbow joint. Consider a simplified model in which the biceps muscle is attached to the forearm 3.80 cm from the elbow joint. Assume that...
Refer to the discussion of holding a dumbbell in Example 11.4 (Section 11.3). The maximum weight that can be held in this way is limited by the maximum allowable tendon tension T (determined by the...
Company name is Walmart, Inc. here is the link https://www.sec.gov/ix?doc=/Archives/edgar/data/104169/000010416923000020/wmt-20230131.htm Overview 1. The financial statements for your company are...
Congress would like to increase tax revenues by 19 percent. Assume that the average taxpayer in the United States earns $54,000 and pays an average tax rate of 15 percent. Required: a. If the income...
Best Solutions is a retail merchandiser selling computer equipment. Best uses the gross method of accounting for inventory purchases and sales, a perpetual inventory system with LIFO inventory...

A small but measurable current of 1.2 x 10-10 A exists in a copper wire whose diameter

Question:

Step by Step Answer:

a The magnitude of the current densi...View the full answer

Fundamentals of Physics

Students also viewed these Electricity and Magnetism questions