Question

GENERAL PHYSICS PHY2049 A) 0.287 B) 0.693 ) 0.725 D) 1.33 E) None of these 20. A cireular metal ring is situated above a lone straight wire, as shown in the figure. The straight wire has a current flowing to the lefi, and the current is decreasing in time at a constant rate. Which statement is true? a> There is an induced current in the metal ring, flowing in a clockwise direction. current in the metal ring, flowing in a counter-clockwise direction. There is no induced current in the metal ring because the current inthe wire is changing at a constant rate. None of these c. d. 21. A uniform magnetic field is applied perpendicular to the plane of a 60-turn circular coil with a radius of 6.0 cm and a resistance of 0.60 ?. If the magnetic field increases uniformly from 0.20 T to 1.8 T in 0.20 s, what is the magnitude of the emf induced in the coil? A) 7.2 V B) 5.4 V C9.2 V D) 12 V E) 16 V 22. At what rate would the current in a 50-mH inductor have to change to induce an emf of 1000 V in the inductor? A) 100 A/s A/s C) 2000 A/s D) 20,000 A/s E) 10 A/s Pag

Answer 1

open ㄩㄒ D0.2. out out