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A closed curve encircles several conductors. The line integral
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Chapter 28 Solutions
University Physics with Modern Physics, Volume 1 (Chs. 1-20) and Mastering Physics with Pearson eText & ValuePack Access Card (14th Edition)
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- A particle accelerator produces a beam with a radius of 1.25 mm with a current of 2.00 mA. Each proton has a kinetic energy of 10.00 MeV. (a) What is the velocity of the protons? (b) What is the number (n) of protons per unit volume? (b) How many electrons pass a cross sectional area each second?arrow_forwardTwo infinitely long parallel wires are at a distance of 5.0 cm apart. If the wires carry a current of 4.7A, what is the exchanged force per meter between the wires ( in units of µN )? Select one: O A. 114.9 O B. 70.7 C. 88.4 OD. 50.8 O E. 103.8arrow_forwardTwo infinitely long parallel wires are at a distance of 5.0 cm apart. If the wires carry a current of 7.7A, what is the exchanged force per meter between the wires ( in units of µN )? Select one: O A. 237.2 B. 278.7 С. 308.3 D. 189.7 O E. 136.4arrow_forward
- An electron is travelling at 100.0 km/s parallel to a long straight horizontal conductor a distance of 3.00 cm from the conductor. A current of 12.0 A runs through the wire as the electron travels parallel to it, in the same direction as the electron’s velocity. Find the strength of the external electric field that will prevent the electron from deviating from its original path. Express your answer in V/marrow_forwardA closed curve encircles several conductors. The line integral PB.dL around this curve is 3,83x104 T.m (a) What is the net current in the conductors? (b) If you were to integrate around the curve in the opposite direction, what would be the value of the line integral? Select one: lenci=D 305 A, 0.0 T.m lencl = 502 A, -3.83 x 10 4T.m lenci = 502 A, -7.66 x 104 T.m lencl = 600 A, -7.66 x 104T.m lencl = 305 A, -3.83 x 10 4 T.m lencl = 502 A, 0.0 T.m %3Darrow_forwardFour infinite wires passing through the vertices of a square with side-length of 2 /2 cm, holding the same current -18 as shown. What is the magnitude of B at the centre of the square (point A)? Select one: O a. 0.00187 T O b. 0.00748T O C. None Od. 0.00374 T O e. Zeroarrow_forward
- Problem 1: Two long thin parallel wires are 0.1 m apart and each wire carries a current of 12 A. The current for the wire on the left is into the page and the current for the wire on the right is out of the page. What is B at point P, 0.08 m from one wire and 0.06 m from the other wire? Hint: Point P is on the corner of the right triangle with the right angle. Answer: B = −(1.4 × 10−5 T)î − (4.8 × 10-5 T)ĵ. 0.08 m - X 0.1 m- I -0.06 marrow_forward10. A current of 10 A is flowing through an 1 m long wire. At a distance 0.2 mm from the wire, there is a +0.05 C charge, moving to the right with a speed of 250 m/s. What are the magnitude and direction of the force on the charge, caused by I? B X X X X X X I хх х х 100arrow_forwardTwo infinitely long parallel wires are at a distance of 5.0 cm apart. If the wires carry a current of 6.7A, what is the exchanged force per meter between the wires ( in units of µN )? Select one: OA. 179.6 OB. 211.0 OC. 143.6 OD. 103.2 OE. 233.4 Next paarrow_forward
- The current in a wire varies with time according to the relationship I = 55 A - (0.65 A/s2)t2. (a) How many coulombs of charge pass a cross section of the wire in the time interval between t = 0 and t = 8.0 s? (b) What constant current would transport the same charge in the same time interval?arrow_forwardCs2 - Mr.Khalil . ... The current in a wire varies with time according to the equation I(t) = 6.00 A + (4.80 A/s)t, wheretis in seconds. How many coulombs of charge pass a cross section of the wire in the time period between t = 0.00 s and t = 3.00 s? Select one: а. 39.6 С b. 13 С O c. 21 C O d. 72 C Clear my choice Next pag physiarrow_forwardA caterpillar of length 6.00 cm crawls in the direction of electron drift along a 8.20-mm-diameter bare copper wire that carries a uniform current of 38.0 A. (a) What is the potential difference between the two ends of the caterpillar? (b) Is its tail positive or negative relative to its head? (c) How much time does the caterpillar take to crawl 2.30 cm if it crawls at the drift speed of the electrons in the wire? (The number of charge carriers per unit volume is 8.49 × 1028 m-3 and resistivity of copper is 1.69 × 10-8 Ω·m.)arrow_forward
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