A packed bundle of 100 long, straight, insulated wires forms a cylinder of radius R=0.500cm. If each wire carries 2.00 A, what are the magnitude and direction of the magnetic force per unit length acting on a wire located 0.200 cm from the center of the bundle.

Two long parallel wires each carry a current of 5.7 A in opposite directions. The two wires are separated by 13 cm. What is the magnitude of the magnetic field ( in uT) at the midpoint between the wires?

A wire carries a steady current of 2.20 A. A straight section of the wire is 0.750 m long and lies along the y axis within a uniform magnetic field,  = 1.90  T. If the current is in the positive y direction, what is the magnetic force on the section of wire? Magnitude   Direction

A uniform magnetic field B = 1.7 x 10-4 T exists in +x direction. A proton (q = +e,  and mp = 1.67 x 10-27 kg) is shot through the field in the +y direction with a speed of 3.5 x 105 m/s. Find the magnitude and direction of the magnetic force FB on the proton.

Two long straight current carrying wires both have currents of 28.7 A directed to the right. The wire are laid parallel to one another and are separated by a distance of 0.015 m. What is the magnitude of the magnetic force per unit length exerted on the top wire due to it interacting with the magnetic field produced by the bottom wire? Enter a number to 4 decimal places; for example 0.0572

A particle with charge q enters a region with a uniform magnetic field Bthat acts in x and z directions (By = 0). The initial velocity of the particle is v = 2î +3ŷ. The force acting on the particle is given by F = q(-3 î + 2ĵ – 9k). Find the magnetic field vector B O a. B= -3î – k O b. B = 3î . O c. B= 2î + 3k O d. B= 4î – 2k O e. B= 2î – 3k

Three very long, straight, parallel wires each carry currents of 15.6 A, directed into of the page. The wires pass through the vertices of a right isosceles triangle of side 13.1 cm. What is the magnitude of the magnetic field at point P at the midpoint of the hypotenuse of the triangle?