An electron in a uniform magnetic field has a velocity v = 40i + 35j m/s. It experiences a force F = - 4.2i + 4.8j N. If Bx = 0, calculate the magnetic field.

A proton, that is accelerated from rest through a potential of 60 kV enters the velocity filter, consisting of a parallel-plate capacitor and a magnetic field, shown below. What is the proton's speed? Take т, — 1.67 х 10 27 kg and e - 1.6 x 10 19 с. B The speed, v - Units Select an answer The E-field between the plates is 1.3 x 106 N/C. What B-field is required so that the protons are not deflected? The magnetic field, B = Units Select an answer

Find the magnitude of magnetic field in a long straight wire at 5.0 cm from the wire. The magnitude of the current is 50A. ?0 = 4? × 10^−7 T. ?⁄?

Consider the current-carrying wire shown in the figure. The current creates a magnetic field at the point P, which is the center of the arc segment of the wire. If 0 = 20.0°, the radius of the arc is 0.700 m, and the current is 5.00 A, what are the magnitude (in nT) and direction of the field produced at P? magnitude direction 2.49 X Apply the Biot-Savart law. What will be the contributions of the segments of wire along the straight-line sections? Hint: what is ds x Î for each segment? nT into the screen Need Help? Submit Answer Read It