Question

14) A rectangular coil, with comers labeled ABCD, of length L and width w is placed ina magnetic field B as shown in Figure 22-3. If there is a current / flowing through this coil, what is the force acting on section AB of this coil? A) ILB sine B) ILB cosO C ILB D)ON E) ILB/2 Answer: 15) A wire carrying a 2-A current is placed at an angle of 60° with the respect to a magnetic field of strength 0.2 T. If the length of the wire is 0.6 m what is the magnitude of the magnetic force acting on the wire? A) 0.4N B) 0.2N C) 0.6 N D) 0.8 N E) 1.0N Answer 16) A straight wire 20 cm long, carrying a current of 4 A, is in a uniform magnetic field of 0.6 T. What is the force on the wire when it is at an angle of 30° with respect to the field? A) 0.2N B) 0.3N C) 0.4 N D) 0.5N E) 0.6 N Answer: A 17) A wire, 0.60 m in length, is carrying a current of 2.0 A and is placed at a certain angle with respect to the magnetic field of strength 0.30 T. If the wire experiences a force of 0.18 N, what angle does the wire make with respect to the magnetic field? A) 20° B) 25 C) 30° D) 350 E) 60° Answer