Complete solutions and avoid using chatgpt and handwritten answers and sketch also. I will give 5 star as my gratitude.

16. An experimental battery cell is created with an EMF of 1.5 volts and an unknown internal resistance. When connected to a load of 10 ohms, the terminal voltage is measured at 1.2 volts. Calculate the internal resistance of the battery and the current flowing through the circuit. 17. A 1500-watt electric heater is designed to operate at 120 volts. Calculate the current drawn by the heater and its resistance. Additionally, estimate how much energy (in kilowatt-hours) the heater uses if it operates for 3 hours continuously. 18. A refrigerator has a power rating of 200 watts and runs for an average of 8 hours per day. Calculate the daily and monthly energy consumption of the refrigerator in kilowatt- hours. Assume 30 days in a month