4. [-/5 Points] DETAILS KATZPSE1 32.P.045. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The magnetic flux through each turn of a 180-turn coil is given by QB = 8.50 x 10- sin(wt), where w is the angular speed of the coil and B is in webers. At one instant, the coil is observed to be rotating at a rate of 9.20 x 102 rev/min. (Assume that t is in seconds.) (a) What is the induced emf in the coil as a function of time for this angular speed? (Use the following as necessary: t. Do not use other variables, substitute numeric values. Assume that & is in volts. Do not include units in your answer.) & = (b) What is the maximum induced emf in the coil for this angular speed? Submit Answer 5. [-/5 Points] DETAILS KATZPSE1 32.P.053.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The maximum value of the emf in the primary coil (Np = 1500) of a transformer is 185 V. (a) What is the maximum induced emf in the secondary coil (Ns = 550)? (b) What is the ratio of the current in the primary coil to the current in the secondary coil? IP = Is Need Help? Master It Submit