Figure 1 shows a section of a horizontal copper wire carrying a current of 0.38 A....
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Figure 1 shows a section of a horizontal copper wire carrying a current of 0.38 A. A horizontal uniform magnetic field of flux density B is applied at right angles to the wire in the direction shown. 95 mm /////. current current 0.38 A uniform magnetic field Figure 1 (a) State the direction of the magnetic force that acts on the moving electrons in the wire as a consequence of the current and explain how you arrive at your answer. (b) With a current of 0.38 A, the average velocity of an electron in the wire is 5.5 x 10* ms and the average magnetic force on one electron is 1.4 x 1025 N. Calculate the flux density B of the magnetic field. (c) Copper contains 8.4 x 102 free electrons per cubic metre. The section of wire in Figure 1 is 95 mm long and its cross-sectional area is 5.1 x 10° m. Show that there are about 4 x 10" free electrons in this section of wire. (b) At a point on the Earth's surface the magnetic field has a horizontal component due north of 1.8 x 10T and a vertical component downwards of 5.5 x 10 T. (1) Draw a diagram. (i) Calculate the force on a 1.5 m length of wire carrying a current of 13 A when the wire is held vertically with the current flowing downwards. (iii) Calculate the force when the wire is horizontal with the current flowing west to east. Figure 1 shows a section of a horizontal copper wire carrying a current of 0.38 A. A horizontal uniform magnetic field of flux density B is applied at right angles to the wire in the direction shown. 95 mm /////. current current 0.38 A uniform magnetic field Figure 1 (a) State the direction of the magnetic force that acts on the moving electrons in the wire as a consequence of the current and explain how you arrive at your answer. (b) With a current of 0.38 A, the average velocity of an electron in the wire is 5.5 x 10* ms and the average magnetic force on one electron is 1.4 x 1025 N. Calculate the flux density B of the magnetic field. (c) Copper contains 8.4 x 102 free electrons per cubic metre. The section of wire in Figure 1 is 95 mm long and its cross-sectional area is 5.1 x 10° m. Show that there are about 4 x 10" free electrons in this section of wire. (b) At a point on the Earth's surface the magnetic field has a horizontal component due north of 1.8 x 10T and a vertical component downwards of 5.5 x 10 T. (1) Draw a diagram. (i) Calculate the force on a 1.5 m length of wire carrying a current of 13 A when the wire is held vertically with the current flowing downwards. (iii) Calculate the force when the wire is horizontal with the current flowing west to east.
Expert Answer:
Related Book For
Posted Date:
Students also viewed these physics questions
-
A plane electromagnetic wave falls at right angles to the surface of a plane-parallel plate of thickness l. The plate is made of non-magnetic substance whose permittivity decreases exponentially from...
-
A force of 10N is applied at right angles to the handle of a spanner, 0.5 m from the centre of a nut. the moment on the nut is: a. 5 Nm b. 2 Nm c. 0.5 Nm d. 15 Nm e. None of a, b, c and d QUESTION 22...
-
A uniform magnetic field is at right angles to the plane of a wire loop. If the field decreases by 0.20 T in 1.0 x 10-3s and the magnitude of the average emf induced in the loop is 80 V, (a) What is...
-
What minimum force f , applied horizontally to the wheel axis, is needed to bring the wheel up to the height step h ? Tomer as the wheel radius and w as its weight. Tip: apply the equilibrium...
-
The Financial Accounting Standards Board (FASB) and the International Accounting Standards Board (IASB) recently completed a joint project to develop a common revenue standard for U.S. GAAP and IFRS...
-
Explain the fallacy of the exception.
-
Degree of reaction of steam turbine is (a) \(\frac{(\Delta h)_{m}}{(\Delta h)_{m}+(\Delta h)_{f}}\) (b) \(\frac{(\Delta h)_{f}}{(\Delta h)_{m}+(\Delta h)_{f}}\) (c) \(\frac{(\Delta h)_{m}}{(\Delta...
-
Kathy Bourne is an advertising specialist for Success Advertising, Inc. Her annual salary is $42,000, of which 20% is withheld for federal income taxes, 7% for state income taxes, 7.65% for FICA...
-
1. What surprised you the most about radiation in our surroundings daily? Would you recommend this learning resource to family and friends? Why? https://www.epa.gov/radtown/radiation-sources-house
-
The Analytical Chemistry (Dec. 15, 2009) study in which HPLC scientists used high-performance liquid chromatography to determine the amount of drug in a tablet. Twenty-five tablets were produced at...
-
How many Australian Dollars (AUD) can you buy with 100 Euros(EUR) according to the information below in the chart? A) 159.68 B) .62624 C) 62.624 D) 1.5968 90 to Restore Original Defaults 99) Actions ...
-
The Pantene Company is subject to income taxes of 20% on income through $25,000 and 40% on income in excess of $25,000. Projected information for next year follows: Selling price per unit $40...
-
Calculate the fair present values of the following bonds, all of which pay interest semiannually, have a face value of $1,000, have 10 years remaining to maturity, and have a required rate of return...
-
Consider the following table of measured data pairs for a physical process t /6 /4 /2 3/4 P 1/2 3/4 3/2 1 The process can be described using the following model with all arguments in radians p(t) a...
-
The Jablonski family has a monthly income of $6,500. They're applying for an FHA loan with monthly payments of $2,200. They have student loan payments of $300 per month and a minimum payment of $20...
-
Finding a Derivative implicit differentiation. 5. x + y = 9 7. +=16 9. x - xy + y = 7 11. r'y - y = x 13. x-3xy + 2xy = 12 15. sin x + 2 cos 2y = 1 17. csc x= x(1+tan y) 19. y sin ry Finding...
-
) Suppose a stock is expected to pay a $1.00 dividend every month and the required return is 6% with monthly compounding. What is the price?
-
Software Solution is family-owned business that has been in operation for more than 15 year. The board of directors is comprised of mainly family members, plus a few professionals such as an...
-
For the spring in Exercise 25, how much mass would have to be suspended from the vertical spring to stretch it In exercise A particular spring has a force constant of 2.5 x 103 N/m. (a) The first 6.0...
-
What is the minimum uncertainty in the position of a 0.50-kg ball that is known to have a speed uncertainty of 3.0 x 10-28 m/s?
-
Assume that the average kinetic energy of ions in a plasma is the same as the average kinetic energy of the atoms in an ideal gas. If fusion can begin to occur when the ions approach to within about...
-
Diehl Cleaners has the following statement of financial position items. Instructions Classify each item as an asset, liability, or equity. Analyze the effect of transactions. Accounts payable Cash...
-
Erin Danielle, the bookkeeper for Liverpool Ltd., has been trying to determine the correct statement of financial position for the company. The companys statement of financial position is shown...
-
Which of the following is true? a. Financial frauds have not occurred in U.S. companies because GAAP has detailed accounting and disclosure requirements. b. Transaction analysis is basically the same...
Study smarter with the SolutionInn App