Practice 1-3: Read the following problems below. Show all necessary work need. 1. A heater is labeled 1800 W / 220 V. Determine how much current the heater draws from a 220-V outlet. 2. A spark of 20 MV lightning has an energy output of 0.150 MW-s. Compute how much charge flowed through the lightning. 3. A current of 65 A flows through a flat iron that has a resistance of 0.30. What is the rate of heat production by the appliance? 4. An electric kettle receives an electric power of 1900 W when a current with a value of 20 A is supplied through it. How much is the resistance offered by the kettle?