positive charge is moving to the right while in a uniform magnetic field directed upward. What is the direction of the magnetic field force exerted on the charge? Select one of the given options

A charged particle, after entering a constant magnetic field B, starts moving freely along a circular path in the magnetic field applied perpendicular to the particle’s velocity (v).  What do you conclude about the particle’s kinetic energy (KE)? Group of answer choices KE remains unaltered as v and FB are perpendicular to each other KE increases under the constant magnetic force FB. KE decreases when magnetic force (FB) is perpendicular to the motion (v). KE and magnetic force FB are not correlated.

Magnetic Field in a Toroid You have a toroid with 21.00 loops and a current 0.560 A. You measure the magnetic field at a distance r from the center of the toroid and find a result of 7.30 UT. What is the value of r (distance from the center of the toroid)? Your Answer: Answer units

Two long, parallel wires separated by 50 cm each carry currents of 4.0 A in a horizontal direction. a) Find the magnetic field midway between the wires if the currents are in the same direction. b) Find the magnetic field midway between the wires if the currents are in opposite directions.

Four thin wires that are parallel, straight, and very long are shown in the figure. All four wires carry an identical current I in the directions indicated. All four wires are a distance d from the origin of the coordinate system. y 4 d All wires carry a current I in the d d indicated direction. 1 3 d All wires are a distance d from the origin. 2 a) Identify the direction of the magnetic field at the origin for each wire. Possible directions have been given below. Each answer choice may be used more than once. А. Т В. I С. — E. out of page F. into page D. + Wire 1: Wire 2: Wire 3: Wire 4: b) What is the x-component of the net magnetic field at the origin? Express your answer in terms of I, d, and fundamental constants.