step up transformer for a home heating system increases the voltage of electricity from 120 V to 240 V. The transformer has 400 turns of wire on its primary coil. The resistance of the heating system is 60 . a. Calculate the number of turns on the transformer's secondary coil. b. Calculate the current in the secondary coil (drawn by the heating system). c. Calculate the current in the primary coil. d. Calculate the electrical power input to the primary coil and the electrical power used by the secondary coil. Which, if any, is greater? (Explain why!)