Homework-Chapter 5 1) (a) Find the direction of the force on a proton moving through the magnetic fields in this figure. (b) Repeat part (a), assuming the moving particle is an electron. General Physics II Chapter 5, Magnetism Page 217 2) Find the direction of the magnetic field acting on the positively charged particle which is moving as shown in these figures. General Physics II Chapter 5, Magnetism Page 218 3) Determine the initial direction of the deflection of these charged particles as they enter the magnetic fields shown in this figure. General Physics II Chapter 5, Magnetism Page 219 4) An electron moves with velocity v = 5.0i + 3.2k m/s through a uniform magnetic field B = 9.4i + 6.7j T. (a) Find the magnetic force on the particle. (b) What is the electron’s velocity after 1 ns? General Physics II Chapter 5, Magnetism Page 220 5) A 1.4 µC charge moving at 185 m/s experiences a magnetic force FB = 2.5i + 7.0j µN in a magnetic field B=42i-15j mT. Find the angle between the particle's velocity and the magnetic field. General Physics II Chapter 5, Magnetism Page 221 6) A wire of negligible resistance is bent into a rectangle as in this figure, and a battery and resistor are connected as shown. The right-hand side of the circuit extends into a region containing a uniform magnetic field of 38 mT pointing out of the page. Find the magnitude and direction of the net force on the circuit. General Physics II Chapter 5, Magnetism Page 222 7) A current of 17.0 mA is maintained in a single circular loop with a circumference of 2.00 m. A magnetic field of 0.800 T is directed parallel to the plane of the loop. What is the magnitude of the torque exerted by the magnetic field on the loop? General Physics II Chapter 5, Magnetism Page 223 8) A proton moves freely in a circular path perpendicular to a constant magnetic field. The proton takes 2.00 µs to complete 1 revolution. Determine the magnitude of the magnetic field. General Physics II Chapter 5, Magnetism Page 224 9) Find the direction of the current in the wire that would produce a magnetic field directed as shown. General Physics II Chapter 5, Magnetism Page 225 10) An electron has an initial velocity of (10000 ˆj + 13000kˆ)m / s and a constant acceleration of (3.00 ×1012 m / s 2 )iˆ in a region in which uniform electric and magnetic fields are present. If B = (400µT )iˆ , find the electric field E . General Physics II Chapter 5, Magnetism Page 226 11) A wire has 1.0 A of current flowing through it. The wire is in a magnetic field of 3.2 kˆ µT . The wire is situated so that it begins and ends at the coordinates shown in this figure. In vector notation, what is the force acting on the wire? General Physics II Chapter 5, Magnetism Page 227 General Physics II Chapter 5, Magnetism Page 228