Problem 1:Two long thin parallel wires are 0.1 m apart and each wire carries a current of 12 A. The currentfor the wire on the left is into the page and the current for the wire on the right is out of thepage. 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 -X0.1 m-I-0.06 m

The magnetic field at point P B=−(1.4×10−5T)i−(4.8×10−5T)j.Explanation:

Answered: Problem 1: Two long thin parallel wires…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 26P: A square loop whose sides are 6.0-cm long is made with copper wire of radius 1.0 mm. If a magnetic...

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Consider two current-carrying wires, separated by a distance d = 4.9 cm, as shown in the figure. The left wire is directed out of the page with current I1, and the right wire is directed into the page with current I2. The point P is a distance d from both wires, so the wires and the point form an equilateral triangle. If the current from the first wire is 7.5 A and the current from the second is 15 A, what is the magnitude of the magnetic field, in tesla, at point P?
Draw a sketch of the situation in the figure, showing the direction of electrons carrying the current, and use RHR-1 to verify the direction of the force on the wire.
A portion of a long, cylindrical coaxial cable is shown in the figure below. An electrical current I = 3.0 amps flows down the center conductor, and this same current is returned in the outer conductor. Assume the current is distributed uniformly over the cross sections of the two parts of the cable. The values of the radii in the figure are r1 = 1.5 mm, r2 = 4.0 mm, and r3 = 7.0 mm. Using Ampere’s Law, find the magnitude of the magnetic field at the following distances from the center of the inner wire: a. 1.0 mm. b. 3.0 mm. c. 5.5 mm. d. 9.0 mm.
In a particular region there is a uniform current density of 14 A/m2 in the positive z direction. What is the value of ʃ B(vector) dot d s(vector) when that line integral is calculated along the three straight-line segments from (x, y, z) coordinates (7d, 0, 0) to (7d, 2d, 0) to (0, 0, 0) to (7d, 0, 0), where d = 19 cm?
A 2.4 m segment of wire supplying current to the motor of a submerged submarine carries 950 A and feels a 3.9 N repulsive force from a parallel wire 5.00 cm away. What is the magnitude of the current in the other wire in A?
An electric current is flowing through a long cylindrical conductor with radius a = 0.75 m. The current density J = 9.5 A/m2 is uniform in the cylinder. In this problem we consider an imaginary cylinder with radius r around the axis AB. 1. For r = 0.5 a, calculate the numerical value of B in Tesla. 2. Express the magnitude of the magnetic field, B, at r > a in terms of I and r. 3. Express B in terms of J, a and r. 4. For r = 2 a, calculate the numerical value of B in Tesla.
The beam, consisting of electrons with constant kinetic energy and uniform density, carries a current of 1 mA.The beam has a cross-sectional area of 23 mm^2, electron density 3x10^12 cm^-3. If the electric current is to the rightIf it is oriented, what is the magnitude (m/s) and direction of the velocity of the electrons? A) 61, leftB) 71, rightC) 51, rightD) 91, leftE) 57, left
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Given that there are two wires right next to one another with the left ones current going downwards and the rights ones current going upwards. If we know that the field of the current of the left wire at the current on the right is 5.5 x 10-7 T, then what is the current in the left wire? Assume that the current on the right is 0 A and the currents are separated by 1.4 m.Let's call the current on the left I1 and the current on the right I2. What current in I1 (consider both magnitude and direction) is needed if it is to be repelled from I2 (0.4 A) with a magnetic force per length of 4 x 10-7 N/m if they are separated by 1.2 m. Assume that upward is positive and downward is negative.
The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of I = 4.00 A. The radius of cross-section A1 is r1 = 0.480 cm. An illustration shows a horizontal cylindrical conductor of nonuniform diameter such that the radius of the left face of the cylinder, r1, is less than the radius of the right face of the cylinder, r2. Similarly the area A1 of the left face of the cylinder is less than the area of the right face of the cylinder, A2. The current is shown to flow rightward and horizontal, as represented by the arrow I. (a) What is the magnitude of the current density across A1? A/m2 The radius r2 at A2 is larger than the radius r1 at A1. (b) Is the current at A2 larger, smaller, or the same? The current is larger.The current is smaller. The current is the same. (c) Is the current density at A2 larger, smaller, or the same? The current density is larger.The current density is smaller. The current density is the same. Assume A2 =…
Problem 1: A 2.5 m segment of wire supplying current to the motor of a submerged submarine carries 950 A and feels a 3.9 N repulsive force from a parallel wire 5.00 cm away. What is the magnitude of the current in the other wire in A?
An electron is accelerated from rest through a potential diference of 800 V and into a region of space with a uniform magnetic feld. If the electron follows a circular path with a radius of 25 cm, what is the magnitude of the magnetic feld? [Answer: B = 3.8 × 10−4 T]

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