3. [-/3 Points] DETAILS HRW10 30.P.004. MY NOTES PRACTICE ANOTHER A wire loop of radius 21 cm and resistance 9.5 0 is located inside a uniform magnetic field B that changes in magnitude as given in the figure below. The vertical axis scale is set by B = 0.50 T, and the horizontal axis scale is set by to = 6.00 s. The loop's plane is perpendicular to B. What emf is induced in the loop during the following time intervals ? B (T) t (s) (a) t = 0 to t = 2.0 s V (b) t = 2.0 s to t = 4.0 s V c) t = 4.0 s to t = 6.0 s V 4. [0/2 Points] DETAILS PREVIOUS ANSWERS HRW10 30.P.007. MY NOTES PRACTICE ANOTHER The magnetic flux through the loop shown in the figure below increases according to the relation D = 6.0t + 6.2t, where @ is in milliwebers and t is in seconds. Law R (a) What is the magnitude of the emf induced in the loop when t = 1.9 s? 33.44 x mv (b) What is the direction of the current through R? O left O right O insufficient information 5. [-/1 Points] DETAILS OSUNIPHYS1 29.6.P.051. MY NOTES PRACTICE ANOTHER If a current is 4.4 A, how many turns per centimeter must be wound on a solenoid in order to produce a magnetic field of 3.8 x 10-3 T within it? |turns/cm Additional Materials Reading8. [-/3 Points] DETAILS OSUNIPHYS1 30.1.P.029. MY NOTES PRACTICE ANOTHER The accompanying figure shows a rectangular coil consisting of 30 closely spaced turns that has a resistance of 6.0 0. The magnetic field at all points inside the coil varies according to B = Boe , where Bo = 0.20 T and a = 200 s CO! X X X X X X X X X X X X 2.0 cm X X X X X - 5.0 cm X X X X X What is the current induced in the coil (in A) at the following times? (Enter the magnitudes.) (a) 0.001 s A (b) 0.002 s A (c) 2.0 s A Additional Materials Reading 9. [-/1 Points] DETAILS OSUNIPHYS1 30.1.WA.005. TUTORIAL. MY NOTES PRACTICE ANOTHER An emf is induced by rotating a 1247 turn, 20.0 cm diameter coil in the Earth's 4.53 x 10-5 T magnetic field. What average emf is induced, given the plane of the coil is originally perpendicular to the Earth's field and is rotated to be parallel to the field in 10.0 ms? V