4. [-/1 Points] DETAILS SERPSE10 31.1.OP.002.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A solenoid of radius 3.90 cm has 720 turns and a length of 25.0 cm. (a) Find its inductance. my (b) Find the rate at which current must change through it to produce an emf of 80.0 mV. (Enter the magnitude.) A/s Need Help? Read It Master It Submit Answer 5. [-/1 Points] DETAILS SERPSE10 31.1.OP.004. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The current in a 70.0-mH inductor changes with time as / = 4.00t - 8.00t, where / is in amperes and t is in seconds. (a) Find the magnitude of the induced emf at t = 1.00 s. mv (b) Find the magnitude of the induced emf at t = 4.00 s. mv (c) At what time is the emf zero? S Need Help? Read It Watch It Submit Answer 6. [-/1 Points] DETAILS SERPSE10 31.2.OP.010. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER In the circuit shown in the figure below, let L = 5.10 H, R = 8.90 0, and & = 120 V. What is the self-induced emf 0.200 s after the switch is closed? V BL Need Help? Read It Watch It Submit Answer7. [-/1 Points] DETAILS SERPSE10 31.2.OP.011. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An electrical engineer designed an RL circuit similar to the one shown in the figure, with & = 6.00 V, L = 2.60 mH, and R = 6.40 Q. (a) What is the inductive time constant of the circuit (in ms)? ms (b) Calculate the current in the circuit (in A) 250 us after the switch is closed. A (c) What is the value of the final steady-state current (in A)? (d) After what time interval (in ms) does the current reach 80.0% of its maximum value? ms Need Help? Read It Submit Answer 8. [-/1 Points] DETAILS SERPSE10 31.3.P.021.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An air-core solenoid with 62 turns is 8.00 cm long and has a diameter of 1.20 cm. When the solenoid carries a current of 0.780 A, how much energy is stored in its magnetic field? Need Help? Read It Master It Submit Answer 9. [-/1 Points] DETAILS SERPSE10 31.3.OP.015. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 11.0-V battery, a 4.99-0 resistor, and a 10.7-H inductor are connected in series. After the current in the circuit has reached its maximum value, calculate the following. (a) the power being supplied by the battery W (b) the power being delivered to the resistor w (c) the power being delivered to the inductor W (d) the energy stored in the magnetic field of the inductor Need Help? Read It Watch It Submit