In order to manage the requirements of the mansion, several primary secondary transformers are found on the property. They operate on the 00000 0000000 coil coll principles of mutual induction. 8.12 Explain why transformers only work with alternating current. (1) 8.13 If the current in the primary coil is 2 A, and there are three times more turns on the secondary coil than the primary coil, calculate the current in the secondary coil. (4) 8.14 If the power input to the transformer is 200W, calculate the voltage in the primary coil. (3)