Question: Two copper wires have equal cross-sectional areas and lengths of 2.0 m and 0.50 m, respectively. (a) What is the ratio of the current in

Two copper wires have equal cross-sectional areas and lengths of 2.0 m and 0.50 m, respectively.
(a) What is the ratio of the current in the shorter wire to that in the longer one if they are connected to the same power supply?
(b) If you wanted the two wires to carry the same current, what would the ratio of their cross-sectional areas have to be? (Give your answer as a ratio of longer to shorter.)

Step by Step Solution

★★★★★

3.35 Rating (170 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a I F ... 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

Document Format (1 attachment)

530-P-M-C-R (358).docx

120 KBs Word File

Students Have Also Explored These Related Electricity and Magnetism Questions!

Two copper wires have equal lengths, but the diameter of one is three times that of the other. (a) The resistance of the thinner wire is (1) 3, (2) 1/3, (3) 9, (4) 1/9 times that of the resistance of...

Four cylindrical rods with various cross-sectional areas and initial lengths are stretched by an applied force, as in Figure 17-11. The resulting change in length of each rod is given in the...

Two solid rods are made of the same material and have the same cross-sectional areas, and their lengths differ by a factor of two. If a compressive force F is applied to both, what is the ratio of...

Two copper wires have equal cross - sectional areas and lengths of 1 . 2 m and 0 . 5 2 m , respectively. What is the ratio of the current in the shorter wire to that in the longer one if they are...

=29 B=39 0:139 D=12 Will be graded: l. The gure shows cross sections through three long conductors ofthe same length and the same material, with square cross sections of edge lengths as shown....

A=29 B=39 C=139 D=12 B= D= Will be graded: 1. The figure shows cross sections through three long conductors of the same length and the same material, with square cross sections of edge lengths as...

A=29 3:39 0:139 D=12 Will be graded: l. The gure shows cross sections through three long conductors of the same length and the same material, with square cross sections of edge lengths as shown....

Which of the following is not true about ohmic materials? Select your answer. The magnitude of their current density depends on the electric field. Their resistivity has a constant value. They obey...

Learning Goal: To understand the meaning of Young's modulus and to perform some real-life calculations related to the stretching of steel. Hooke's law states that for springs and other "elastic"...

The experimental result differs from the assumption. The result shows that the ring oscillator frequencies can be grouped into two groups, where the first group is the high frequency group for the...

A Not-for-Profit Organization At a local college, the officers of the student community service organization? which collects and buys food and distributes it to people in need? are having their...

What valuation should be recorded for noncash assets transferred to a partnership by one of the partners?

Kendra is a single mom with a 5 year - old daughter, name Aliza. Her wages are $ 3 2 , 0 0 0 for the year, and she has $ 5 5 in interest income. You want to make sure they qualify for the Earned...

Cordillera Carson Company has the following balance sheet and income statement for 20X2 (in thousands): (i) Current period's depreciation is $480. (ii) Ending inventory for 20X1 was $1,800. On the...

When a movement was organized to build Charles City College, Hauser and others signed pledges to contribute to the college. At the time of signing, Hauser inquired what would happen if he should die...

The Farley Manufacturing Company prides itself on the quality of its products. The company is engaged in competition for a very important project. A key element is a part that ultimately goes into...

Again Inc. is proposing a rights offering. There are 450,000 shares outstanding at $90 each. There will be 80,000 new shares offered at $84 each. a. What is the new market value of the company? b....

Sachs Brands' defined benefit pension plan specifies annual retirement benefits equal to: 1.6% service years final year's salary, payable at the end of each year. Angela Davenport was hired by...

Show the impact of preexisting goodwill on the consolidation process, and be able to include prior investments in the acquisition price.

You are standing at x = 0 m, listening to a sound that is emitted at frequency f 0 . The graph of FIGURE Q16.12 shows the frequency you hear during a 4-second interval. Which of the following...

The displacement of a wave traveling in the positive x-direction is D(x, t) = (3.5 cm) sin(2.7x - 124t), where x is in m and t is in s. What are the (a) Frequency, (b) Wavelength, (c) Speed of this...

a. What is the wavelength of a 2.0 MHz ultrasound wave traveling through aluminum? b. What frequency of electromagnetic wave would have the same wavelength as the ultrasound wave of part a?

Explain the s in the user permissions on the following piece of output from the ls l command. -rws--x--x 1 whiten1 whiten1 0 Jan 8 14:24 myscript

A bond with a coupon rate of 7% makes semiannual coupon payments on January 15 and July 15 of each year. The Wall Street Journal reports the ask price for the bond on January 30 at 100:03. What is...

Refer to the ANOVA table for this regression. Source d.f. SS MS Regression 3 131,725 43,908 Error 21 518,386 24,685 Total 24 650,111 (a) State the degrees of freedom for the F test for overall...