In the figure, point P2 is at perpendicular distance R = 26.9 cm from one end of straight wire of length L= 11.1 cm carrying current i = 0.977 A. (Note that the wire is not long.) What is the magnitude of the magnetic field at P2? P P R R L. Number i Units

A 3.0 uC charge moves horizontally due east with a speed of 4.0*10^5 m/s. A magnetic field of 1.2 T is due north at an angle of 30 degrees below horizonal direction. 1. What is the magnitude of the force on the charge?  a. 1.00 N b. 1.44 N c. 0.72 N  d. 1.25 N 2. What is the direction of the force on the charge? a. Into the earth  b. Out of the earth c. North 60 degrees above horizontal d. South 30 degrees below horizontal

Please help me with this question, thank you so much A straight wire of length A carries a current I. The wire lies along the x-axis. a. Calculate the magnetic field due to the wire of length A at some distance D along the y-axis. b.  Find B, when A>>>>D (One end of the wire is at the origin o and the other is along the x-axis a distance A from the origin)

A conductor wire bent into a semicircle of radius of R = 3cm forms a closed circuit and carries current of I = 2 A. A uniform magnetic field of B = 5T(-j) is directed along the positive y-axis as shown in figure below. What is the magnitude and direction of the magnetic force acting on the straight, curved portion of the wire and the net magnetic force acting on the conductor wire, respectively? B y dl R O a. 1.8N(-Â), 1.8N(-k), 3.6(–Â) O b. 1.8NÊ, 1.8N(-k), 0 O c. 6 NÊ, 6N(-k),0 O d. 0.6Nk, 0.6Nk, 1.2Nk O e. 0.6NÊ, 0.6N(-k), 0