Question: 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

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 1.1x10²⁹ m^-3; in aluminum, it’s 2.1x10²⁹ m^-3.
(a) the drift speeds
(b) the current densities in each wire.

Step by Step Solution

★★★★★

3.19 Rating (166 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Current ineAvd i current n density of electrons in give... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Essential University Physics Questions!

A space traveler weighs 540.0 N on earth. What will the traveler weigh on another planet whose radius is twice that of earth and whose mass is three times that of earth?

An aluminum wire with a diameter of 0.100 mm has a uniform electric field of 0.200 V/m imposed along its entire length. The temperature of the wire is 50.0C. Assume one free electron per atom. (a)...

A gold wire and an aluminum wire have the same dimensions and carry the same current. The electron density (in electrons/cm3) in aluminum is three times larger than the density in gold. How do the...

Please I need just the answers no working needed 1) Cell membranes contain channels that allow ions to cross the phospholipid bilaycr. Suppose that a particular potassium channel carries a current of...

The topic was all about Current In the A part , what are the particular terms described in each statement? In the B part , which statements are true and false? If it is inaccurate, explain why it is...

Explain how to solve those given problems in detail about Current. 1. Find the current in a copper wire connected to a battery, if a charge of 2.50 C passes through a section of the wire in 3.5 s. 2....

1Which of the following statements is true about current? Select your answer. It moves from a low electric potential to a high electric potential. Its 51 unit is coulomb per square meter {g} or...

2. [/1 Points] SERPSE10 26.1.P.001.M|. ASK YOUR TEACHER PRACTICE ANOTHER A 350-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,220 A. If the conductor is...

Please answer for c) and d). Imagine a 1 [m] length of copper wire that carries a current of 50 [mA] and has a cross-section area of 0.4 x 10-6 [m]. a) What is the drift speed of the electrons?...

Question 2 A mass attached to a spring oscillates with a period of 2.00 s. If the mass starts from rest at x = 4.50 x 10 -2 m and time t= 0, where is it at time t = 8.80 s? Express your answer in...

Which statement about the purpose of PESTEL is correct? Multiple Cholce It helps managers understand how a firm's external environment affects the firm. It helps managers understand how a firm's...

Describe the methods discusses to develop accurate cost estimates and the benefits and limitations of each. Why is cost estimation such a critical factor in attracting capital to grow your business?...

Please please please help me with my final exam, I need it to be 1 0 0 % correct, these are 2 questions. I really really appreciate your help! Thank you so much! 3 Feemster Corporation manufactures...

=+ a. Draw the country's production possibility curve.

When (S)-1-bromo-1-fluoroethane reacts with sodium methoxide, an S N 2 reaction takes place in which the bromine atom is replaced by a methoxy group (OMe). The product of this reaction is...

Draw the transition state for each of the following S N 2 reactions: (a) (b) (c) (d) Br Br P

In Problem 7.4, we saw that an intramolecular substitution reaction can occur when the nucleophilic center and electrophilic center are present in the same compound. Draw the transition state of the...

A simple random sample from a population with a normal distribution of 105 body temperatures has x = 98.90"F and s =0.63"F. Construct a 90% confidence interval estimate of the standard deviation of...

What is the future value of $1,100 placed in a savings account for four years if the account pays 8.00% compounded quarterly?

Butler International Limited is evaluating a project in Erewhon. The project will create the following cash flows: Year Cash Flow 0 $ 950,000 1 285,000 2 345,000 3 415,000 4 255,000 All cash flows...