Introductory Physics-I1 PHYS-1112K, Spring-2018 Test # 2 depen or a c nserv squa

Question

Introductory Physics-I1 PHYS-1112K, Spring-2018 Test # 2 depen or a c nserv squa Name: ....I nd five steps of your answers. Answer the first Note: For full credit you must show all the questions, and either question six or seven. Chapter-21. Magnetic Forces and Magnetie Fields 1. A circular loop of wire with N -60 turns and of radius r - 0.62 m carries a constant cur 1-4.0 A. The loop may be rotated about an axis that passes through the center and lies in plane of the loop. When the orientation of the normal to the loop with respect to the direction of the magnetic field is -7" the torque on the coil is-84 N·m, what is the magnitude of the uniform magnetic field B exerting this torque on the loop? eti rir A) 0.30T )0.40T .50T D)0.60T E) 0.80 T 2. In the operating room, anesthesiologists use mass spectrometers to monitor the respiratory gases of patients undergoing surgery. One gas that is often monitored is the anesthetic isoflurane (molecular mass -3.06x 10-25 kg). In a spectrometer, a singly ionized molecule of isoflurane (charge q = + e) moves at a speed of v-9.8S x 103 m/s on a circular path of radius r-0.08 m. What is the magnitude of the magnetic field that the spectrometer uses? (te-1.60 x 10-19 c).

Explanation / Answer

2) mv^2/R = qVB

B = mV / qR

= 3.06*10^-25 * 9850 / (1.6*10^-19*0.08)

= 0.235 T

so the magnitude of magnetic field is 0.235 T

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