An electron moves at a speed of 3.0x107 m/s straight through a region of uniform magnetic field. No deflection from this straight path is observed. melectron = 9.1 x 10-3'kg

An electron moves with a speed of 1.5 x 107 m/s in the direction shown below in the figure. A 0.7 T magnetic field points as also shown in the figure. What is the magnetic force on the electron? (e = 1.6 x 10-19 C) 17x10-12 N. into the page Electron 50° B X

6) A charged particle has velocity Jo = vfê + všŷ when it enters a region of uniform magnetic field B = Bââ, setting the particle on a helical motion. a) Determine the radius of the helix. b) Determine the time it takes to complete one full turn of the helix. c) Determine the displacement in the r-direction during the the time to complete one full turn of the helix.

A particle of mass m carrying a negative charge q passes through a perpendicular magnetic field B al speed v. as shown below. The radius of its circular path while it is within the magnetic field is r. (see diagram)   Which of the following is equal to the speed, r. of the particle? A) qr/mB                           B) qBr/m C) qB/rm                           D) m/qBr

Two long, straight, parallel wires separated by a distance d carry currents in opposite directions as shown in the figure. The bottom wire carries a current of 6.0 A. The top wire carries a current of 18 A. Point C is at the midpoint between the wires. 6.0 A C 11a. Determine the magnitude of the magnetic field at point C if d = 0.10 m. A) 2.4 x 10-5 T B) 4.8 x 10-5 T C) 9.6 x 10-5 T D) 1.1 x 104 T E) 1.4 x 104 T 11b. What is the direction of the magnetic field at the point C? A) to the left of the page B) to the right of the page C) toward the bottom of the page D) into the plane of the page E) out the plane of the page

Q1) Example 11.1: Page No. 498: (Practice) An alpha-particle of charge 3.2 x 10 19 C moves through a uniform magnetic field of 1.5 T. What is the maximum magnetic force on the alpha-particle when it is moving with a speed of 5.0 x 10 m/s? Q2) Problem 23: Page No. 525: (Practice) An electron moving at 4.00 x 10 m/s in a 1.25-T magnetic field experiences a magnetic force of 1.40 x 10 N. What angle does the velocity of the electron make with the magnetic field? Q3) Problem 33: Page No. 526: An alpha-particle (m-6.64x10"kg, q=3.2×101°C) travels in a circular path of radius 25 cm in a uniform magnetic field of magnitude 1.5 T. (a) What is the speed of the particle? (b) What is the kinetic energy in electron volts? (1 electron-volt = 1.602x10 9 joule) Q4) Problem 25: Page No. 525: (Practice) A cosmic-ray electron moves at 7.5x10 m/s perpendicular to Earth's magnetic field at an altitude where the ficld strength is 0.1 G. What is the radius of the circular path the electron follows? F00…

Two conductors carrying currents of 6.0 A and 4.0 A are separated by 10.0 cm as shown. Determine the magnitude and direction of the magnetic field midway between the conductors. 10 cm 6.0 A 4.0 A 8.0x10-0 T into page 4.8x10- T repulsive O 4.0x10- T out of page O 4,0x10> T into page O 8.0x10-6 T out of page

A proton moves perpendicular to a uniform magnetic field  at a speed of 1.30  107 m/s and experiences an acceleration of 1.40  1013 m/s2 in the positive x-direction when its velocity is in the positive z-direction. Determine the magnitude and direction of the field. magnitude      ____T direction     +x, -x, +y, -y, +z, -z