The flexible loop in the figure below has a radius of 12 cm and is in a magnetic field of strength 0.17 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.25 s to close the loop, what is the magnitude of the average induced emf (in mV) in it during this time? 181 = x x x x x x x x x x mV x A X x x B x x x x x x x x x x x

A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage to 360 kV. The secondary coil of this transformer is being replaced so that its output can be 770 kV for more efficient cross-country transmission on upgraded transmission lines.Randomized Variables V1 = 360 kVV2 = 770 kV a) What is the ratio of turns in the new secondary to the number of turns in the old secondary?  b) What is the ratio of new current output to the old current output for the same power input to the transformer?  c) If the upgraded transmission lines have the same resistance as the original ones, what is the ratio of new line power loss to the old?

The flexible loop in the figure below has a radius of 10 cm and is in a magnetic field of strength 0.18 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.17 s to close the loop, what is the magnitude of the average induced emf (in mV) in it during this time? |E| = X x X x x x X X X x mV XOAX Α X XB X В X X x x * X x x O

A 2.00 cm diameter, 14.0 cm long solenoid has 60.0 turns and has a 1.00 cm diameter loop inside it. The loop has a resistance of 0.400 Ω. What is the current in the loop at 0.00600 s? The the maximum and the minimum current in the graph have the same magnitude which is 3.60 A.