Three wires pass through a rectangular hole. Two of the wires carry parallel currents going into the hole with magnitudes 8 A and 10 A. The third wire carries a current of 20 A in the opposite direction. The value of the magnitude of f B - dī evaluated along the perimeter of the hole is most nearly (А) -1. А ро (В) 6 А Мо- (C) 38 A Ho. (D) 18 A 4o- (E) 2 А до.

Three wires pass through a rectangular hole. Two of the wires carry parallel currents going into the hole with magnitudes 8 A and 10 A. The third wire carries a current of 20 A in the opposite direction. The value of the magnitude of f B - dī evaluated along the perimeter of the hole is most nearly (А) -1. А ро (В) 6 А Мо- (C) 38 A Ho. (D) 18 A 4o- (E) 2 А до.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 64P: A solenoid with an iron core is 25 cm long and is wrapped with 100 turns of wire. When the current...

See similar textbooks

Similar questions

A square loop whose sides are 6.0-cm long is made with copper wire of radius 1.0 mm. If a magnetic field perpendicular to the loop is changing at a rate of 5.0 mT/s, what is the current in the loop?
A solenoid with an iron core is 25 cm long and is wrapped with 100 turns of wire. When the current through the solenoid is 10 A, the magnetic field inside it is 2.0 T. For this current, what is the permeability of the iron? If the current is turned off and then restored to 10 A, will the magnetic field necessarily return to 2.0 T?
Two long parallel wires carry currents I1=I, and I2=2I in the same directions. Which of the following statement(s) is/are true?
A current sheet, K = 30.0a A / m, lies in the plane z = −5 m and a filamentary conductor is on the y axis with a current of 5.0 A in the direction a. Find the force per unit length. Resp 94.2 uN / m (attraction)
A uniform magnetic field is perpendicular to the plane of a circular loop of diameter 10 cm formed from wire of diameter 2.5 mm and resistivity 1.69 * 10-8 ohmm. At what rate must the magnitude of change to induce a 10 A current in the loop?
At what speed (in m/s) will a proton move in a circular path of the same radius as an electron that travels at 8.39 ✕ 105 m/s perpendicular to the Earth's magnetic field at an altitude where the field strength (B) is 1.37 ✕ 10−4 T? (Hint: First calculate the radius of circular path of an electron and use it to calculate the speed of proton) me=9.109*10-31, mp=1.67*10-27, q=1.602*10-19
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]
A 2.65 m segment of wire supplying current to the motor of a submerged submarine carries 1050 A and feels a 4.4 N repulsive force from a parallel wire 5.00 cm away. What is the magnitude of the current in the other wire in A?
In an experiment designed to measure the Earth’s magnetic field using the Hall effect, a copper bar 0.500 cm thick is positioned along an east-west direction. Assume it n = 8.46 × 1028 electrons/m3 and the plane of the bar is rotated to be perpendicular to the direction of → B. If a current of 8.00 A in the conductor results in a Hall voltage of 5.10 × 10–12 V, what is the magnitude of the Earth’s magnetic field at this location?
Consider the infinite wire carrying current of 2 A along positive y-direction. The other wire is carrying current of 1 A along positive x direction from x = 4 m to x=12 m. Calculate the force exert on second wire from the first wire. (a) 3.634×10 N (b) 4.394x10N (c) 7.216x1077 N (d) 9.631x10 N
A uniform magnetic field is perpendicular to the plane of a circular loop of diameter 15 cm formed from wire of diameter 2.7 mm and resistivity of 1.76 × 10-8Ω·m. At what rate must the magnitude of the magnetic field change to induce a 7.5 A current in the loop?
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