Question
d B points out of page and the current is counter clocrise rnd e n 8 A magnetic field is perpendicular to a loop of wire. The graph shows how the magnetic fiaid changes a a function of time. At which point on the graph would the magnitude of the current induted in the io be the maximum? a. A b. B C. C d. D e. E 9. For an electromagnetic wave, which of the following must be true? a. The wave travels in the direction of the electric field. b. The wave travels in the direction of the magnetic field. c. The electric field and the magnetic field lie in the same plane. d. The electric and magnetic fields are perpendicular to the direction the wave tra 10 If you want to measure the current through and the voltage across the resistor R2,
Explanation / Answer
8. INDUCED CURRENT i=e/R here e=-dphi/dt and phi= BAcos theta hence e depends on dB/dt i.e slope of graph which is maximum for E
Hence option E is correct.
9. option D is correct.
