9. A cell has an unloaded potential difference of 1.45 V. A 330 2 resistor is connected as a load 1.31 as shown in the picture. The meter shows the new p.d. a) What is the emf of the cell? b) What is the current through the resistor? c) What is the internal resistance of the battery? d) What is the rate at which heat is being produced in the battery? e) What is the rate at which chemical energy is being converted to electrical energy in the cell?