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hitt A proton undergoes a circular motion at a speed of 4 × 106 m/s in a uniform magnetic field of 4 T. What is the period of the motion? A. 16 ns B. 32 ns C. 8.9 ps D. 18 ps E. 27 ps.

Phy 2049: Magnetism etc. Magnetic fields and magnetic forces * Torque on a current loop * Hall effect Magnetic field produced by currents Biot-Savart Law Ampere law Force between two current carrying wires.

Chapter 29 Magnetic Fields Due to Currents In this chapter we will explore the relationship between an electric current and the magnetic field it generates in the space around it. We will follow a two-prong approach, depending on the symmetry of the problem. For problems with low symmetry we will use the law of Biot-Savart in combination with the principle of superposition. For problems with high symmetry we will introduce Ampere’s law. Both approaches will be used to explore the magnetic field generated by currents in a variety of geometries (straight wire, wire loop, solenoid coil, toroid coil) We will also determine the force between two parallel current carrying conductors. We will then use this force to define the SI unit for electric current (the Ampere) (29 – 1)

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hitt A proton undergoes a circular motion at a speed of 4 × 106 m/s in a uniform magnetic field of 4 T. What is the radius of the circular motion? A. 0.066 m B. 0.01 m C. 5.7 μm D. 12 μm E. 0.13 m. B