Question

#11

6. B =- Val-3-6) 7. B = 726-6) 8. B- V20+k) 9. B =-; 10. B = - 007 (part 2 of 2) 10.0 points For given values of Ê and B, there exists a critical speed such that the electrons may move along the + direction undeflected. if the speed of the electron is less than the criti- cal speed, along which direction will the elec- trons be deflected? 1. c = 120+B) 2. = Answer in units of T. 009 (part 2 of 2) 10.0 points What is its direction? 1. Negative y direction 2. Positive y direction 3. Negative I direction 4. None of these 5. Positive I direction 6. Negative z direction 7. Positive a direction 010 10.0 points A conductor suspended by two flexible wires as in the figure has a mass per unit length of 0.98 kg/m The acceleration of gravity is 9.8 m/s?. 1 (-;-) 3. =) 4. 1 5. le = 10 + 2) 1 Bin 6. = V2 1 7. = 56-24) 1 8. Oe 130+) 9. =-* What current must exist in the conductor in order for the tension in the supporting wires to be zero when the magnetic field is 1.6 T into the page? Answer in units of A. 10. =- 011 10.0 points A current of 2.1 A flows in a straight wire segment of length (4 cm) i + (4 cm) , in a uniform magnetic field of strength (2T)i. Find the magnitude of the force on the wire. Answer in units of N. 008 (part 1 of 2) 10.0 points A 10 A current is directed along the posi- tive z-axis and perpendicularly to a uniform magnetic field. The conductor experiences a magnetic force per unit length of 0.19 N/min the negative y direction. Calculate the magnitude of the magnetic field in the region through which the current passes. 012 10.0 points Consider two straight wires each carrying cur- rent I, as shown.

Answer 1

length ob wire magnetic field current flowing through wire (I) = 202A ở (uî +47) cm = (42+45x10mm B Force (2T) I l x B on wire F 2.1x10² cu êtuĵ) x 2 i = 2.24102 (4x 2) (-12) [ixizo 07 = 16.8x102N ( h) h xî =- 16.8x102 N 0.168 N farie 17 magnitude oro