Inductive charging is used to wirelessly charge electronic devices ranging from toothbrushes to cell phones. Suppose the base unit of an inductive charger produces a 1.20 x 10- T magnetic field. Varying this magnetic field magnitude changes the flux through a 13.0-turn circular loop in the device, creating an emf that charges its battery. Suppose the loop area is 2.50 x 10-4 m and the induced emf has an average magnitude of 5.50 V. Calculate the time required (in s) for the magnetic field to decrease to zero from its maximum value. HINT Need Help? Read ItA 95-turn square wire coil of area 0.040 m rotates about a vertical axis at 1,270 rev/min, as indicated in the figure below. The horizontal component of Earth's magnetic field at the location of the loop is 2.0 x 1073 T. Calculate the maximum emf (in V) induced in the coil by Earth's field. 20.0 cm 20.0 cm V